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1.
J Environ Manage ; 351: 119656, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38042082

RESUMO

Anthropogenic actions have direct and indirect impacts on natural systems, leading to significant alterations in marine ecosystems worldwide. One of the most notable problems is species loss, as the disappearance of species from an area can compromise ecological functions. This is at the core of a severe biodiversity crisis. To address and reverse these processes, marine protected areas (MPAs) have been utilized as a crucial tool to mitigate species loss, increase biomass, and serve as a fisheries management tool. However, there is a lack of information assessing MPAs from the perspective of their contribution to maintaining ecological functions. In recent decades, functional diversity (FD) indices have been widely used to assess ecosystem functioning. In this paper, we conducted an assessment using a global database of reef fish abundance to analyze the effect of No-Take Zones (NTZ) on the FD and "true" diversity (TD) indices of tropical reef fish assemblages in seven tropical biogeographic regions. We found a significant protective effect for some indices, although these responses were dependent on the bioregion. At the bioregional level, NTZs included lower numbers of species and functional entities than open access areas. Consequently, the functional richness protected within these zones partially represented the functional diversity in each biogeographic province. However, smaller-scale functional diversity indices responded to NTZ protection depending on the bioregion. Therefore, these results reinforce that the assessed NTZs are responsive to the protection of functional diversity, although they are not sufficient for safeguarding ecosystem functions in tropical reefs. This highlights the importance of expanding the number of protection entities worldwide with management strategies focused on coral reef fish functionality, as well as effective local/regional assessments. Thus, a new paradigm is necessary in the planning and creation of MPAs to safeguard ecosystem functions, with a priority given to the protection of ecosystem functions and habitats.


Assuntos
Antozoários , Recifes de Corais , Nitrocompostos , Tiazóis , Animais , Ecossistema , Conservação dos Recursos Naturais , Peixes/fisiologia , Biodiversidade
2.
J Environ Manage ; 296: 113343, 2021 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-34351293

RESUMO

Fire is one of the main disturbances of tropical forests. Understanding the spatial and temporal dynamics of forest fires is of fundamental importance for the conservation of tropical forests. We used a frequency ratio model to identify those areas most susceptible to forest fires in the Central Corridor of the Atlantic Forest, from 2001 to 2019. We used data from the burned area of MODIS MCD64A1 to create the dependent variable grouped as climatic, topographic and human and landscape variables. The receiver operating characteristic (ROC) curve and area under the curve (AUC) were used to assess the model's performance. Land use and relief orientation were the most and least important variables in the model, respectively. The model showed good AUC values, ranging from 0.72 to 0.96, with an average of 0.81 for the study period. The average distribution of susceptibility classes was low (19.62 %), medium (24.45 %) and high (20.55 %). The northwestern region of the CAFC was the one that presented the greatest susceptibility to the occurrence of forest fires. The frequency ratio proved to be a good model for mapping areas susceptible to forest fires in an area of the Atlantic Forest.


Assuntos
Incêndios , Incêndios Florestais , Florestas , Humanos , Árvores
3.
Environ Manage ; 57(3): 637-48, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26614350

RESUMO

In the last two decades, coral reefs have become popular among recreational divers, especially inside marine protected areas. However, the impact caused by divers on benthic organisms may be contributing to the degradation of coral reefs. We analyzed the behavior of 142 scuba divers in the Abrolhos National Marine Park, Brazil. We tested the effect of diver profile, reef type, use of additional equipment, timing, and group size on diver behavior and their contacts with benthic organisms. Eighty-eight percent of divers contacted benthic organism at least once, with an average of eight touches and one damage per dive. No significant differences in contacts were verified among gender, group size, or experience level. Artificial reef received a higher rate of contact than pinnacle and fringe reefs. Specialist photographers and sidemount users had the highest rates, while non-users of additional equipment and mini camera users had the lowest contact rates. The majority of contacts were incidental and the highest rates occurred in the beginning of a dive. Our findings highlight the need of management actions, such as the provision of pre-dive briefing including ecological aspects of corals and beginning dives over sand bottoms or places with low coral abundance. Gathering data on diver behavior provides managers with information that can be used for tourism management.


Assuntos
Conservação dos Recursos Naturais , Recifes de Corais , Mergulho , Recreação , Animais , Antozoários , Brasil , Ecologia , Feminino , Humanos , Masculino
4.
Mar Environ Res ; 199: 106575, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38843654

RESUMO

Fluctuations in reef fish settlement and recruitment significantly impact local population dynamics and adult population size. We use light traps to evaluate reef fish settlement in inshore and offshore reefs in the Abrolhos Bank, in addition to the spatio-temporal distribution patterns, and environmental variables' influence. Data were collected from inshore and offshore reefs, and statistical analyses, including GLMs, PERMANOVA and nMDS, aimed to understand spatial-temporal species distribution patterns and the relationship between environmental variables. Results indicate greater species abundance and diversity offshore, influenced by winds, tides, and distance from shore, explaining 50% of larval patterns and highlighting the importance of spatial-temporal variations in early-life reef fish assemblages. However, several factors, including habitat type, quality, complexity, seascape configuration, and MPA location, may influence these patterns. Additionally, we provide evidence that commercially important species like Lutjanids use Abrolhos reef areas as nursery grounds.


Assuntos
Recifes de Corais , Peixes , Dinâmica Populacional , Animais , Peixes/fisiologia , Peixes/crescimento & desenvolvimento , Biodiversidade , Oceano Atlântico , Ecossistema , Monitoramento Ambiental , Distribuição Animal
5.
Rev Bras Parasitol Vet ; 33(1): e016523, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38422329

RESUMO

Callithrix kuhlii is present in forest mosaics, edge habitats, and abandoned fields in the Atlantic Forest. In Bahia and Minas Gerais. This study aimed to identify helminths from C. kuhlii and relate them to the clinical data, weights, and indices of the liver and gonads. Necropsies were performed on 13 adult marmosets that were run over on the BA-001 highway. A principal component analysis (PCA) was conducted to describe the relationships between the variables investigated. Fifty-one helminths were collected from 30.77% (4/13) of the marmosets analyzed. Helminths were classified based on their morphological and morphometric characteristics. Primasubulura jacchi (Marcel, 1857), Platynosomum illiciens (Dougherty, 1946), and Prosthenorchis confusus (Dougherty, 1946) were the species identified, with prevalence rates of 7.69%, 7.69%, and 15.38%, respectively. In addition, this is a new host record of P. confusus. The two main axes of the PCA explained a high variability (PCA=67.7%), indicating reduced weight and indices of the organs of parasitized animals. This study expands the knowledge on parasites of C. kuhlii and its vulnerability to parasites, contributing to constructing an epidemiological profile of environmental health.


Assuntos
Callitrichinae , Helmintos , Animais , Callithrix/parasitologia , Brasil , Florestas
6.
J Ethnobiol Ethnomed ; 18(1): 12, 2022 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-35260180

RESUMO

BACKGROUND: Illegal capture and trade of wild birds are some of the most present types of wildlife trade in Brazil, and are often associated with cultural and socioenvironmental aspects. Those habits are particularly present in rural communities, where bird trade can be a source of income in dire economic situations and bird-keeping is a cultural trait passed down from generations. METHODS: We conducted a series of semi-structured interviews with bird-keepers and traders within the surrounding region of the Parque Nacional de Boa Nova, inquiring about local customs and practices related to bird-keeping, bird trade and bird capture, as well as how these were affected by the establishment of protected areas nearby. We then outlined the main trends and perceptions in a quantitative and a qualitative approach. RESULTS: A total of 21 avian species were mentioned as being used as pets and in commercialization, contests and breeding, most of them occurring naturally in the region. Most respondents were men possessing low levels of education and income. We observed a series of specialized practices regarding bird-keeping, from basic maintenance of captive individuals in order to ensure the animal's health, to interspecies breeding as to produce hybrid individuals. Mentioned methods used to capture wild birds often involved specialized traps and were conducted mainly within the national park's area. Bird trade was said to occur mostly in urban settlements, and the value of captive birds was said to vary, based on species and beforehand training. The official establishment of the protected area impaired all practices related to bird-keeping and trade, mostly as a result of increased surveillance by environmental agencies. CONCLUSION: The collected information presents a series of specialized habits and practices involved in bird-keeping, bird capture and bird trade, many of them being associated with the local avifauna surrounding the region. The establishment of protected areas affected local perceptions regarding bird-keeping and related practices mostly through fear of penalty, although individuals demonstrated some knowledge about how to evade surveillance. We recommend further studies about effective ways to integrate local communities in nearby protected areas' conservation.


Assuntos
Aves , População Rural , Animais , Animais Selvagens , Brasil , Conservação dos Recursos Naturais , Humanos , Conhecimento
7.
An Acad Bras Cienc ; 83(2): 513-22, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21670875

RESUMO

Coral reefs are quite diverse ecosystems that carry out several ecological functions and plays a relevant socioeconomic role. The artisan fishing of octopi (Octopus spp.) is practiced for the survival of part of the inhabitants of Coroa Vermelha community, in the south of the state of Bahia. We intended to study the knowledge of the octopi fishermen of Coroa Vermelha using the comprehensive ethnoecological proposal of Marques. The data were collected between July, 2006 and April, 2008 through direct observation and from interviews with fishermen met by chance and through the "native specialists" criterion. Twenty semi-structured interviews were carried out following an itinerary of pre-established questions about the activity of octopi capture, and the biological and ecological aspects of the resource. The data showed that the fishermen have knowledge about biological and ecological aspects of the octopi. Two capture techniques are used: octopus fishing (polvejamento) in the reefs and through diving. Two specific folk are recognized: the "normal octopus" (Octopus insularis) and the "east octopus" (Octopus macropus (?)). The intervieews demonstrated ecological knowledge sometimes compatible with the scientific literature, mainly in which concerns the trophic ecology and behavior of the octopi.


Assuntos
Recifes de Corais , Ecossistema , Pesqueiros , Conhecimento , Octopodiformes , Animais , Antropologia Cultural , Brasil , Humanos
8.
An Acad Bras Cienc ; 83(2): 589-98, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21670881

RESUMO

This article deals with the sociocultural construction of the 'insect' and 'animal' domains by the inhabitants of the county of Pedra Branca (municipality of Santa Terezinha, Bahia State, Brazil). The fieldwork was performed from September 2006 to July 2007. The data was obtained by means of open-ended interviews of 74 individuals of both genders whose ages ranged from 4 to 89 years old. The results show that the interviewees were unable to say in an accurate and secure way a specific definition for each domain. Depending on how a given animal is culturally interpreted, it could belong to the semantic domain 'animal' or 'insect', being representative of one or another group. However, in practice, such a distinction between these two semantic domains appears as something tenuous and ambiguous. Researchers who carry out biodiversity inventories should pay attention to the ethnocategory 'insect' during their studies, especially if these involve the participation of traditional community representatives.


Assuntos
Insetos/classificação , Conhecimento , Semântica , Terminologia como Assunto , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Animais , Brasil , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
9.
Mar Environ Res ; 162: 105090, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32836012

RESUMO

Understanding the environmental and anthropogenic factors that affect nesting site selection by sea turtles is key to maintaining priority conservation areas. The species Lepidochelys olivacea, Caretta caretta, and Eretmochelys imbricata nest annually on the island of Comandatuba (Una, northeastern Brazil), where this survey was conducted. We evaluated the temporal and spatial distribution of nests during the seasons 2008/2009 to 2014/2015 and 2017/2018. In the last season, we further examined the environmental and anthropogenic factors that influence different nesting performances. We selected six sample areas with different nesting events (high, medium, and low), and recorded the following characteristics: beach slope, sediment grain size, vegetation richness, type of dune, anthropization, and final nest condition. A significant occurrence of nesting was observed in November and December . The spatial distribution of the nests varied over the seasons, with a greater tendency to nest in the south of the island. Higher frequency of anthropization and low slope of the beach were significant factors for areas with a smaller number of nests. Predation of turtle nests may be associated with areas of greater anthropization. Our findings have implications for the conservation and monitoring of nesting sites during reproduction seasons and provide further insight into the nesting dynamics of marginal sea turtle populations.


Assuntos
Tartarugas , Animais , Brasil , Comportamento de Nidação , Comportamento Predatório , Reprodução
10.
J Ethnobiol Ethnomed ; 14(1): 80, 2018 Dec 27.
Artigo em Inglês | MEDLINE | ID: mdl-30587245

RESUMO

BACKGROUND: Traditional raft (jangada), piúba wood raft (jangada de pau de piúba), six-log raft (jangada de seis paus), and wooden raft (jangada de pau) are some of the names given to the traditional Brazilian watercrafts created from the buoyancy of bound logs. The traditional raft is a watercraft used and built by artisan fishermen who have, throughout generations, kept and improved knowledge related to this practice and the use of the plant species they need as raw materials. Active groups of these fishermen and their watercrafts are distributed along 200 km of the coast of the state of Bahia. The fishermen interviewed in this study are at the southern limit of distribution for the use of this type of vessel. METHODS: This study aimed to characterize the use of the arboreal species applied in the construction of the traditional raft in the municipalities of Uruçuca, Ilhéus, and Canavieiras in the southern State of Bahia, Brazil. For this purpose, structured and semi-structured interviews were individually conducted with 36 fishermen, and walking tours were conducted with specialists in the construction of the watercraft. RESULTS: We observed that the raftsmen use 21 species to construct the traditional raft. The features of the wood, such as density, flexibility, and availability, are the main criteria applied to choose the arboreal species. Some species are preferred, such as pau de jangada (Apeiba tibourbou) and biriba (Eschweilera ovata), which are the most frequently employed in watercraft manufacturing. CONCLUSIONS: The southern Bahia population is familiar with the different tree species that are linked to their fishing activities. The main link between the fishermen and the useful species is present in the practice of raft construction. Currently, the restricted access to raw materials limits this practice, which consequently results in the cultural erosion of this community.


Assuntos
Pesqueiros , Plantas , Brasil , Conservação dos Recursos Naturais , Ecossistema , Florestas , Conhecimento , Navios
11.
J Ethnobiol Ethnomed ; 12(1): 52, 2016 Nov 08.
Artigo em Inglês | MEDLINE | ID: mdl-27825355

RESUMO

BACKGROUND: Seahorses are endangered teleost fishes under increasing human pressures worldwide. In Brazil, marine conservationists and policy-makers are thus often skeptical about the viability of sustainable human-seahorse interactions. This study focuses on local ecological knowledge on seahorses and the implications of their non-lethal touristic use by a coastal community in northeastern Brazil. Community-based seahorse-watching activities have been carried out in Maracaípe village since 1999, but remained uninvestigated until the present study. Our goal is to provide ethnoecological understanding on this non-extractive use to support seahorse conservation and management. METHODS: We interviewed 32 informants through semi-structured questionnaires to assess their socioeconomic profile, their knowledge on seahorse natural history traits, human uses, threats and abundance trends. RESULTS: Seahorse-watching has high socioeconomic relevance, being the primary income source for all respondents. Interviewees elicited a body of knowledge on seahorse biology largely consistent with up-to-date research literature. Most informants (65.5 %) perceived no change in seahorse abundance. Their empirical knowledge often surpassed scientific reports, i.e. through remarks on trophic ecology; reproductive aspects, such as, behavior and breeding season; spatial and temporal distribution, suggesting seahorse migration related to environmental parameters. CONCLUSIONS: Seahorse-watching operators were aware of seahorse biological and ecological aspects. Despite the gaps remaining on biological data about certain seahorse traits, the respondents provided reliable information on all questions, adding ethnoecological remarks not yet assessed by conventional scientific surveys. We provide novel ethnobiological insight on non-extractive modes of human-seahorse interaction, eliciting environmental policies to integrate seahorse conservation with local ecological knowledge and innovative ideas for seahorse sustainable use. Our study resonates with calls for more active engagement with communities and their local ecologies if marine conservation and development are to be reconciled.


Assuntos
Conservação dos Recursos Naturais , Estuários , Conhecimento , Smegmamorpha , Animais , Brasil , Ecossistema
12.
J Ethnobiol Ethnomed ; 12(1): 41, 2016 Sep 19.
Artigo em Inglês | MEDLINE | ID: mdl-27642747

RESUMO

BACKGROUND: Studies on the inter-relations between people and animals have been considered essential to better understand the dynamics of socio-ecological systems. This study aimed to register the animal species known by the communities adjacent to National Forest of Araripe, their uses and if the close relationship affects the knowledge of useful species. METHODS: Data collection was conducted through a semi-structured inquiry form, free listings and guided tour. The study included 246 people from two community groups: group 1 (n = 113; <2 km from FLONA) and group 2 (n = 133; ≥ 2 km). RESULTS: According to the free listing, group 1 communities know more animal species (11.50 ± 5.81) than group 2 (9.41 ± 3.70), with a significant difference in knowledge between the groups. Men and women showed no significant difference in knowledge about animal species. The men from group 1 know, significantly, more species than men from group 2; but this difference was not observed in women from both groups. In the analysis of the Use Value (UV), Mazama gouazoubira showed a higher UV, both in group 1 (1.15) and group 2 (1.49). The guided tour identified the presence of 11 species, common in the vegetation of Forested Savannah (Cerradão) and in the transition Rainforest/Savannah (Cerrado). CONCLUSION: The results indicate M. gouazoubira as the most known and used species in this Protected Area, showing that species of interest to the local communities are worthy of conservation attention.


Assuntos
Animais Selvagens , Florestas , Animais , Brasil , Conservação dos Recursos Naturais , Ecossistema , Feminino , Humanos , Masculino
13.
J Ethnobiol Ethnomed ; 10: 54, 2014 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-24994466

RESUMO

BACKGROUND: Fishermen's knowledge is a source of indispensable information in decision-making processes related to efforts to stimulate the management and conservation of fishing resources, especially in developing countries. This study analyzed the knowledge of fishermen from three municipal areas of Bahia in northeast Brazil regarding the behavior repertoire of sharks and the possible influence that these perceptions may have on the inclination to preserve these animals. This is a pioneering study on the ethnobiological aspects of elasmobranchs in Brazil. METHODS: Open, semi-structured interviews with shark fishing specialists were conducted between September 2011 and October 2012. The interviews addressed the fishermen's profile, fishing techniques and knowledge about sharks, focusing on the behaviours exhibited by sharks. The data were analysed with quantitative approach and conducted with the use of descriptive statistical techniques. RESULTS: Sixty-five fishermen were interviewed. They descend from the rafting subculture of Brazil's northeast, which has historically been disregarded by public policies addressing the management and conservation of fishing resources. The fishing fleet involved in shark fishing includes rafts, fishing boats and lobster boats equipped with fishing lines, gillnets, longlines and "esperas". The informers classified sharks' behaviour repertoire into 19 ethological categories, related especially to feeding, reproduction, and social and migratory behaviours. Because they identify sharks as predators, the detailed recognition of the behaviours exhibited is crucial both for an efficient catch and to avoid accidents. Therefore, this knowledge is doubly adaptive as it contributes to safer, more lucrative fishing. A feeling of respect for sharks predominates, since informers recognize the ecological role of these animals in marine ecosystems, attributing them the status of leader (or "the man") in the sea. CONCLUSIONS: This work demonstrates the complexity and robustness of artisanal fishermen's ichthyological knowledge of sharks. Therefore, we suggest that such knowledge should be considered to develop public policies for the control of the fishing activity, as well as to develop and consolidate the National Action Plan for the Conservation of Shark and Ray Species (PAN - Tubarões e Raias).


Assuntos
Comportamento Animal , Pesqueiros , Tubarões , Adulto , Idoso , Idoso de 80 Anos ou mais , Migração Animal , Animais , Brasil , Conservação dos Recursos Naturais , Etologia , Comportamento Alimentar , Humanos , Conhecimento , Pessoa de Meia-Idade , Reprodução , Comportamento Social
14.
J Ethnobiol Ethnomed ; 10: 51, 2014 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-24965849

RESUMO

BACKGROUND: Local Ecological Knowledge (LEK) of traditional fishermen may be the only source of information regarding the conservation of the marine ecosystem and its endangered species. One of these species is Epinephelus itajara, which can exceed 2 m in length and 400 kg weight, is classified by the IUCN as a critically endangered. In Brazil, there is currently a moratorium that prohibits the capture of this specie, and in the northeastern coast, a Marine Protected Area was recently established properly justified by the existence a one spawning aggregation. The scope of the present study was the analysis the LEK of fishers with the goal of contributing to the conservation of E. Itajara. METHODS: The Knowledge of 24 "experts" was recorded through semi-structured interviews with fishermen selected based on their expertise. LEK regarding some aspects of the life history of E. itajara, such as its morphology, spatial distribution, feeding, breeding and conservation, was systematized. The interviews were conducted in synchronic and diachronic situations. The data analysis followed the model of unity of the various individual skills, while the consistency of the analysis was tested using a matrix of methods employed in comparative cognitive science. Potential reproductive aggregation sites were identified by experts through projective interviews conducted based on a cartographic database and transferred to a geographic information system (GIS). RESULTS: The LEK of these specialists in relation to the biological and ecological characteristics of E. itajara showed a high level of detail and a high agreement with the scientific literature. Projective interviews are presented as a promising tool allowing spatialization of the information generated through the registration of LEK. Therefore, the visualization of information from the fishermen, as well as its analysis and comparison with other databases, is simplified, thereby contributing to the decision-making process concerning the conservation of marine ecosystem in Brazil. CONCLUSIONS: Integration of LEK with scientific knowledge is an efficient strategy for the conservation of endangered species, as it provides important additional biological information that can be used in the process of participative and sustainable management of marine resources.


Assuntos
Conservação dos Recursos Naturais , Ecossistema , Pesqueiros , Peixes , Animais , Brasil , Espécies em Perigo de Extinção , Conhecimento
15.
J Ethnobiol Ethnomed ; 9: 15, 2013 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-23448503

RESUMO

BACKGROUND: The use of ethnoecological tools to evaluate possible damage and loss of biodiversity related to the populations of species under some degree of threat may represent a first step towards integrating the political management of natural resources and conservation strategies. From this perspective, this study investigates fishermen's ecological knowledge about sea turtles and attitudes towards the conservation and bycatch in Ilhéus, Southern Bahia, Brazil. METHODS: Fishermen experts semi-structured interviews were performed using snowball sampling method. The interviews consisted of a series of questions relating to the fishermen's profile, structure and work equipment, the local ecological knowledge of fishermen about sea turtles and bycatch, a projective test, attitudes towards turtle conservation and beliefs and taboos regarding turtles. Indicators for quantitative comparisons of respondents in terms of their broad knowledge and attitudes towards turtle conservation were created. Correlation analyses were made between indicators of knowledge and attitude as well as the relationship between education level and knowledge and attitudes. RESULTS: Thirty experts were interviewed for the study. The local ecological knowledge and attitudes of fishermen towards the conservation of sea turtles were respectively medium (0.43) and moderate (0.69) according to experts (based on Likert scale and Cronbach's Alpha). Potential areas of spawning were reported from Barra Grande to Una covering the entire coast of Ilhéus. Methods for identifying the animal, behavior, and popular names were described by fishermen. The most recent captures of turtles were attributed to fishing line, but according to the respondents, lobster nets and shrimp traps are more likely to capture turtles. Knowledge and attitudes were weakly inversely correlated (r = -0.38, p = 0.04), and the education level of the respondent showed a positive correlation with positive attitudes towards turtle conservation (H = 8.33; p = 0.04). Life history, habitat, specific and exogenous taboos, beliefs and the use of hawksbill turtle to make glasses and other handcrafts are also reported in the study. CONCLUSIONS: Monitoring of spawning areas, preservation of traditional practices, strategies to moderate the use of fishery resources and the local ecological knowledge/attitudes can provide data to improve the conservation practices and management of sea turtles.


Assuntos
Atitude , Conservação dos Recursos Naturais , Pesqueiros , Conhecimento , Tartarugas , Adulto , Idoso , Idoso de 80 Anos ou mais , Animais , Brasil , Cultura , Humanos , Masculino , Pessoa de Meia-Idade
16.
Biota Neotrop. (Online, Ed. ingl.) ; 18(3): e20170339, 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-951193

RESUMO

Abstract: Coral reef-based tourism has risen sharply across the globe, coupled with an increase in fish feeding by visitors. Studies indicate that fish feeding is one of the leading causes of changes in distribution patterns, abundance, the structure of marine fish communities, and fish behavior. The aim of this study was to determine the effect of human presence and fish feeding on the behavior of reef fish by conducting in situ experiments in tide pools in a Marine Protected Area located at the northern limit of the Abrolhos Bank in the South Atlantic Ocean. Eight feeding sessions were conducted and filmed, resulting in a total of 160 minutes of video footage. Each filming session recorded four different experimental conditions alternating between human presence, human absence, and fish feeding. Our findings suggest that fish feeding may cause changes in fish behavior, such as habituation to human presence, conditioning to fish feeding, increased aggressiveness, attacks on humans, and short-term changes in species distribution. The continuation of fish feeding over time can cause an increase in the size of the populations of species that consume food provided during feeding and consequently trigger changes in the structure of communities.


Resumo: O uso turístico de recifes de corais tem aumentado fortemente em todo o mundo, e com ele o fornecimento de alimento aos peixes por humanos. Porém, estudos indicam essa atividade como causa de distúrbios nos padrões de distribuição, abundância, estrutura da comunidade e comportamento de peixes marinhos. O objetivo deste estudo foi determinar o efeito da presença humana e da alimentação artificial no comportamento dos peixes recifais, através de experimentos in situ realizados em piscinas de maré de uma Área Marinha Protegida no limite Norte do Banco dos Abrolhos, Atlântico Sul. Para isso foram realizadas 8 sessões (160 min) de filmagem remota do experimento de alimentação artificial. Cada sessão de filmagem registrou quatro tratamentos, os quais alternavam momentos de presença e ausência humana, e de alimentação dos peixes.Os resultados encontrados indicam que a alimentação artificial tem provocado alterações comportamentais nos peixes como a habituação à presença humana, condicionamento à oferta de alimento, aumento da agressividade, ataques a humanos e alterações na distribuição das espécies em curto prazo. A permanência da atividade de alimentação artificial, ao longo do tempo, pode provocar o aumento das populações que consomem o alimento oferecido e consequentemente, desencadear alterações na estrutura da comunidade.

17.
J Ethnobiol Ethnomed ; 8: 13, 2012 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-22449069

RESUMO

BACKGROUND: This article records the traditional knowledge of crab gatherers in the city of Conde, in the North Coast Region of Bahia State, Northeastern Brazil. METHODS: Data on biological and ecological aspects of economically important brachyuran crustaceans have been obtained from semi-structured interviews and in loco observations conducted from September 2007 to December 2009. A total of 57 fishermen of both genders, aged between 10 and 78 years have been interviewed (individually or collectively) in different contexts; interviewees were asked about aspects such as external morphology, life cycle, trophic ecology, and spatial and temporal distribution of the major economically important brachyuran crustaceans in the region. Seven fishing communities were visited: Siribinha, Sítio do Conde, Poças, Ilha das Ostras, Cobó, Buri and Sempre Viva. Data were analyzed by comparing the information provided by participants with those from the specialized academic literature. RESULTS: The results show that artisanal fishermen have a wide ranging and well-grounded knowledge on the ecological and biological aspects of crustaceans. Crab gatherers of Conde know about growth and reproductive behavior of the animals they interact with, especially with regard to the three major biological aspects: "molt", "walking dance" and "spawning". CONCLUSION: This knowledge constitutes an important source of information that should be considered in studies of management and sustainable use of fishery resources in the North Coast Region of Bahia State.


Assuntos
Decápodes/fisiologia , Fenômenos Ecológicos e Ambientais , Pesqueiros , Conhecimento , Adolescente , Adulto , Idoso , Animais , Brasil , Criança , Conservação dos Recursos Naturais , Decápodes/crescimento & desenvolvimento , Feminino , Pesqueiros/economia , Humanos , Masculino , Pessoa de Meia-Idade , Pesquisa Qualitativa , Adulto Jovem
18.
Biota Neotrop. (Online, Ed. ingl.) ; 16(2): e20140106, tab, graf
Artigo em Inglês | LILACS | ID: biblio-951081

RESUMO

The Cultural Keystone Species (CKS) method of identification has been used to define culturally important species. The objective of this study was to identify and characterize CKS vertebrates in the communities surrounding the Environmental Protection Area of Chapada do Araripe and define conservation priorities using semi-structured interviews and free listings. Interviews were conducted with 246 people; 53 species were identified and then included in categories of use: food, medicinal, handicraft and symbolic. Food preference was identified for Mazama gouazoubira, Penelope superciliaris, Dasyprocta prymnolopha and Dasypus novencimctus. As medicinal resources, Salvator merianae and M. gouazoubira represented 51.85% of treatment recommendations. For use in handicrafts, M. gouazoubira, which is also the only species recorded for symbolic use, stands out. Use values (UV) varied from 0.03 to 1.34, and M. gouazoubira had the highest UV (1.34) and a 0.74 projection. Regarding cultural importance, M. gouazoubira was the species with the highest UV and projection, and was indicated as a CKS to be prioritized in research and conservation studies.


O método para identificação de Espécie-Chave Cultural (ECC) tem sido utilizado para definir espécies importantes culturalmente. Nesse sentido, para identificar e caracterizar ECC de vertebrados em comunidades do entorno da Área de Proteção Ambiental da Chapada do Araripe, e definir prioridades de conservação, utilizou-se formulário semiestruturado e listagem livre. Foram entrevistadas 246 pessoas; identificaram-se 53 espécies que foram incluídas nas categorias de uso: alimentar, medicinal, artesanal e simbólico. Identificou-se preferência alimentar para Mazama gouazoubira, Penelope superciliaris, Dasyprocta prymnolopha e Dasypus novencimctus. Como recurso medicinal Salvator merianae e M. gouazoubira representaram 51.85% das indicações de tratamento. No uso artesanal, destaca-se M. gouazoubira, que também foi a única espécie registrada para o uso simbólico. Os valores de uso (VU) encontrados variaram entre 0.03 e 1.34, sendo M. gouazoubira com o VU mais alto (1.34) e 0.74 de saliência. Em relação è importância cultural, M. gouazoubira foi a espécie que apresentou maior VU, saliência e indicada como ECC, para receber prioridades em ações e estudos para conservação.

19.
J Ethnobiol Ethnomed ; 6: 13, 2010 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-20346120

RESUMO

This paper records the meaning of the term 'offense' and the folk knowledge related to local beliefs and practices of folk medicine that prevent and treat snake bites, as well as the implications for the conservation of snakes in the county of Pedra Branca, Bahia State, Brazil. The data was recorded from September to November 2006 by means of open-ended interviews performed with 74 individuals of both genders, whose ages ranged from 4 to 89 years old. The results show that the local terms biting, stinging and pricking are synonymous and used as equivalent to offending. All these terms mean to attack. A total of 23 types of 'snakes' were recorded, based on their local names. Four of them are Viperidae, which were considered the most dangerous to humans, besides causing more aversion and fear in the population. In general, local people have strong negative behavior towards snakes, killing them whenever possible. Until the antivenom was present and available, the locals used only charms, prayers and homemade remedies to treat or protect themselves and others from snake bites. Nowadays, people do not pay attention to these things because, basically, the antivenom is now easily obtained at regional hospitals. It is understood that the ethnozoological knowledge, customs and popular practices of the Pedra Branca inhabitants result in a valuable cultural resource which should be considered in every discussion regarding public health, sanitation and practices of traditional medicine, as well as in faunistic studies and conservation strategies for local biological diversity.


Assuntos
Cultura , Conhecimentos, Atitudes e Prática em Saúde , Medicina Tradicional , Mordeduras de Serpentes/terapia , Serpentes , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Animais , Brasil , Criança , Pré-Escolar , Feminino , Humanos , Entrevistas como Assunto , Masculino , Pessoa de Meia-Idade , Terminologia como Assunto , Adulto Jovem
20.
Biota neotrop. (Online, Ed. port.) ; 12(1): 31-38, Jan.-Mar. 2012. ilus, tab
Artigo em Inglês | LILACS | ID: lil-642989

RESUMO

Stranded cetaceans have scientific value and may confirm the occurrence of some species or indicate their geographical distribution in an area. The collection of biological material can also contribute to improve the knowledge of the species or populations inhabiting certain areas. This study aimed to record live or dead cetaceans found ashore along the coast of Ilhéus, Bahia State, northeastern Brazil. Data were collected through a campaign called "SOS strandings, whales, porpoises and dolphins." Between 1997 and 1999 three hundred posters and five hundred folders were distributed to beach huts, shops, fishing associations and settlements, the city's municipal government, the Brazilian Environmental Agency (IBAMA) and fire stations. During this campaign, which lasted until 2007 it was possible to record 38 cetaceans of ten species on the coast of Ilhéus: Physeter macrocephalus, Megaptera novaeangliae, Globicephala macrorhynchus, Orcinus orca, Peponocephala electra, Stenella clymene, Feresa attenuata, Ziphius cavirostris, Steno bredanensis and Sotalia guianensis. The greatest numbers of records were observed between 2000 and 2003, which was the period after the distribution of banners and posters. The majority of the carcasses were recovered near the city downtown area (<10 km) and there was not a relationship between the state of the carcasses and the distance from that area.


Cetáceos encalhados tem valor científico e podem confirmar a ocorrência de algumas espécies ou indicar a sua distribuição geográfica em uma área. A coleta de material biológico também pode contribuir para ampliar o conhecimento das espécies ou populações que ocorrem em uma determinada região. Este estudo teve como objetivo registrar cetáceos encalhados vivos ou mortos no litoral de Ilhéus, Bahia, nordeste do Brasil. Os dados foram coletados através de uma campanha chamada "SOS encalhes, baleias, botos e golfinhos." Entre 1997 e 1999, trezentos cartazes e quinhentos folders foram distribuídos em cabanas de praia, estabelecimentos comerciais, associações de pescadores e colônias de pesca, prefeitura municipal da cidade, o Instituto Brasileiro do Meio Ambiente e Recursos Naturais Renováveis (IBAMA) e o corpo de bombeiros. Com esta campanha, que durou até o ano 2007, foi possível registrar 38 cetáceos de dez espécies na costa de Ilhéus: Physeter macrocephalus, Megaptera novaeangliae, Globicephala macrorhynchus, Orcinus orca, Peponocephala electra, Stenella clymene, Feresa attenuata, Ziphius cavirostris, Steno bredanensis e Sotalia guianensis. O maior número de registros ocorreu entre os anos de 2000 e 2003, que foi o período após a distribuição de folders e cartazes. A maior ocorrência de encalhes foi em áreas próximas ao centro da cidade (<10 km) e não houve uma relação entre o estado das carcaças e a distância do centro da cidade.

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