ENSO feedback drives variations in dieback at a marginal mangrove site.

Ocean-atmosphere climatic interactions, such as those resulting from El Niño Southern Oscillation (ENSO) are known to influence sea level, sea surface temperature, air temperature, and rainfall in the western Pacific region, through to the north-west Australian Ningaloo coast. Mangroves are ecologically important refuges for biodiversity and a rich store of blue carbon. Locations such as the study site (Mangrove Bay, a World Heritage Site within Ningaloo Marine Park and Cape Range National Park) are at the aridity range-limit which means trees are small in stature, forests small in area, and are potentially susceptible to climate variability such as ENSO that brings lower sea level and higher temperature. Here we explore the relationship between mangrove dieback, and canopy condition with climatic variables and the Southern Oscillation Index (SOI)-a measure of ENSO intensity, through remote sensing classification of Landsat satellite missions across a 29 year period at a north-west Australian site. We find that the SOI, and seasonal mean minimum temperature are strongly correlated to mangrove green canopy (as indicator of live canopy) area. This understanding of climate variations and mangrove temporal heterogeneity (patterns of abundance and condition) highlights the sensitivity and dynamics of this mangrove forest and recommends further research in other arid and semi-arid tropical regions at mangrove range-limits to ascertain the extent of this relationship.

Offspring from maternal nutrient restriction in mice show variations in adult glucose metabolism similar to human fetal growth restriction.

Fetal growth restriction (FGR) is a pregnancy condition in which fetal growth is suboptimal for gestation, and this population is at increased risk for type 2 diabetes as adults. In humans, maternal malnutrition and placental insufficiency are the most common causes of FGR, and both result in fetal undernutrition. We hypothesized that maternal nutrient restriction (MNR) in mice will cause FGR and alter glucose metabolism in adult offspring. Pregnant CD-1 mice were subjected to MNR (70% of average ad libitum) or control (ad libitum) from E6.5 to birth. Following birth, mice were fostered by mothers on ad libitum feeds. Weight, blood glucose, glucose tolerance and tissue-specific insulin sensitivity were assessed in male offspring. MNR resulted in reduced fetal sizes but caught up to controls by 3 days postnatal age. As adults, glucose intolerance was detected in 19% of male MNR offspring. At 6 months, liver size was reduced (P = 0.01), but pAkt-to-Akt ratios in response to insulin were increased 2.5-fold relative to controls (P = 0.004). These data suggest that MNR causes FGR and long-term glucose intolerance in a population of male offspring similar to human populations. This mouse model can be used to investigate the impacts of FGR on tissues of importance in glucose metabolism.

Downstream morphological change in response to dam construction: a GIS based approach for the Lower Ord River, Western Australia.

Flow regulation in the Lower Ord River began in 1963 with the completion of the Kununurra Diversion Dam, part of a large-scale irrigation scheme in the far north of Western Australia. What was previously an ephemeral river punctuated by large flood events now contains permanent, regulated flows all year round, and fundamental changes in the downstream channel morphology are now evident. Further changes to the regulated flow regime are planned as part of the eventual expansion of the irrigation area. It is necessary to understand and document the channel responses that have occurred in the Lower Ord so far as a result of flow regulation. This paper presents a GIS based investigation into morphological change in the Lower Ord River. Geomorphic surface data are largely generated from sequential aerial photographs, calibrated using field observations and historical records. Results illustrate the changes in the total area of each surface type, the direction of change in bar evolution and the significance of changes in channel width throughout the study reach.

Emergency response to raccoon rabies introduction into Ontario.

During 15 July to 4 October, 1999, rabies control programs were implemented with the objective being to contain the first three confirmed cases of raccoon rabies in Canada. The strategy, called point infection control (PIC) involved the use of three tactics: population reduction (PR), trap-vaccinate-release (TVR) and oral rabies vaccination with baits (ORV), to control the spread of raccoon rabies. A total of 1,202 raccoons (Procyon lotor) and 337 skunks (Mephitis mephitis) were captured and euthanized using 24,719 trap-nights in the three PR zones around the location of the three rabies cases, near Brockville, Ontario. That represented an 83% to 91% reduction in the raccoon populations in an approximate 225 km2 area around the three rabies cases. Raccoon density in the PR zones declined from 5.1-7.1/km2 to 0.6-1.1/km2 following control. All tested specimens were negative for rabies by the fluorescent antibody test (FAT). In addition, 1,759 raccoons and 377 skunks were intramuscularly vaccinated against rabies and released using 27,956 trap-nights in an approximate 485 km2 TVR zone implemented outside of the PR zones. A total of 856 cats from both PR and TVR areas were also captured, vaccinated and released. Cost for the three PIC operations was $363,000.00 Cdn or about $500.00 Cdn/km2. To further contain the outbreak, about 81,300 baits containing Raboral V-RG oral rabies vaccine were aerially distributed on 8 and 27 September 1999, to create an 8 to 15 km wide buffer zone (1,200 km2 area) of vaccinated raccoons immediately beyond the PR and TVR zones. This was the first time that V-RG was used in Canada to orally vaccinate free ranging raccoons against rabies. Baiting costs were $241,000.00 Cdn or about $200.00 Cdn/km2 including post baiting assessment costs. As of 31 August, 2000, thirty-five additional cases (38 in total) of raccoon rabies have occurred in the control and vaccination zones. This number is far below the level of rabies prevalence in USA jurisdictions where raccoon rabies was epizootic. In the future, PIC methodologies will continue to be used in Ontario to contain isolated cases of raccoon rabies.

Pokémon contagion: photosensitive epilepsy or mass psychogenic illness?

We studied a reported illness outbreak occurring on December 16, 1997, involving more than 12,000 Japanese children who had various signs and symptoms of illness after watching an episode of a popular animated cartoon, Pokémon. While photosensitive epilepsy was diagnosed in a minuscule fraction of those affected, this explanation cannot account for the breadth and pattern of the events. The characteristic features of the episode are consistent with the diagnosis of epidemic hysteria, triggered by sudden anxiety after dramatic mass media reports describing a relatively small number of genuine photosensitive-epilepsy seizures. The importance of the mass media in precipitating outbreaks of mass psychogenic illness is discussed.

Divorcing and building a new life.

The purpose of this study was to provide a qualitative description of women's experiences of divorcing and building a new life. Interviews with 10 divorced women were conducted, transcribed, and analyzed using the constant comparative method. Four phases were identified in the process of divorcing and building a new life: the emotional divorce, making the decision, pulling apart, and moving beyond. Feelings and coping strategies reported by the participants are described.

Antiabortion violence: causes and effects.

PIP: Most antiabortion groups objected peacefully to the US Supreme Court decision granting women access to abortion by lobbying, demonstrating, and writing letters. Some groups reacted violently. In 1984, violent acts had climbed to 18 bombings and 6 acts of arson directed against abortion providers. They dropped in 1988-1990 and rose again in 1992-1993. The far rights' disapproval of the Reagan and Bush Administrations' inability to make abortion illegal accounts for these increased acts of violence. The violent antiabortion groups interpreted Reagan's failure to stop the continuing violence as approval of their methods. A former Catholic seminarian, Joseph Scheidler, called for a militant effort to end abortion, thereby unleashing the militant, violent antiabortion movement. He led local grassroots groups nationwide to accomplish the Year of Pain and Fear he called for in his book. Antiabortion zealots understand and use the potency of language. The dehumanize abortion providers. They suggest that followers pray for death or destruction. Their rhetoric of hatred motivates persons to perform violent acts. Little difference exists between clinic blockaders and clinic bombers/arsonists. Antiabortion zealots tend to be financial and social drifters escaping a past of drinking or drugs and from very dysfunctional families. Antiabortion violence has ushered in a new wave--murder of a provider. Abortion providers have adapted to lie with threats, jeering, and bricks thrown through windows. Even though abortion seekers fear personal injury, they fear even more harassment and invasion of privacy. Their tactics have reduced women's access to abortion care. Abortion providers operate in just 17% of US counties. When zealots spew hatred on families, however, providers often stop performing abortions. Nevertheless, communities are starting to stand up to the reactionaries. Neighbors, patients, businesses, and other physicians in Montana supported a clinic after a violent act. This needs to occur more often to stop the violence.^ieng

An epidemic of antiabortion violence in the United States.

From 1977 to 1988, an epidemic of antiabortion violence took place in the United States, involving 110 cases of arson, firebombing, or bombing. The epidemic peaked in 1984, when there were 29 attacks. Nearly all sites (98%) were clinics that provided abortions. Facilities in 28 states and the District of Columbia were involved. The national rate of violence was 3.7 per 100 abortion providers and 7.2 per 100 nonhospital abortion providers. The national ratio of violence per 100,000 abortions performed was 0.6 Arson was both the most frequent (39% of all cases) and the most damaging (mean cost $141,000) type of violence. The epidemic appears partially attributable to multiple point-source outbreaks of violence caused by small numbers of individuals or groups. Thirty-three persons have been convicted to date. Vigorous prosecution of perpetrators and the reemergence of clinics after damage probably helped to curb the epidemic.

PIP: Between 1977-88 there was an epidemic of violence directed against abortion clinics. These attacks consisted of 110 cases of arson, firebombing, or bombing. In 1984 the epidemic reached a peak with 29 attacks. 98% of the sites were clinics that provided abortion services. This study surveys the frequency of attacks per states based on 3 different denominators: 1) number of abortion providers, 2) cumulative number of abortions performed from 1977-88, 3) estimated number of women in the 15-44 age group as of July 1, 1982. During the study period 1977-88, the National Abortion Federation reported the following violent acts against clinics: 222 clinic invasions, 220 acts of clinic vandalism, 216 bomb threats, 65 death threats, 46 assault and batteries, 20 burglaries, and 2 kidnapings. Vigorous investigation and convictions have slowed the epidemic. The longest sentence handed down was 30 years and the largest fine was $350,000. The biggest effect it has had is financial. The direct cost is $7.6 million, but this does not include the cost of clinics that were destroyed and not rebuilt. It does not include the cost of related expenses for lawyers and security, increased insurance, new licensing requirements, and staff recruitment. Also, lost time waiting for repairs and rescheduling of patients to other facilities are not included in this figure. Violence of this nature does nothing to end the debate over abortion, it also does not reduce the number of abortions. It only raises the cost of abortion, and inconveniences women seeking abortion. Sex education, personal responsibility, and more widespread and effective contraceptive use would all reduce the need for abortion.

SBLA syndrome revisited.

We have provided an in-depth, longitudinal, clinical/genetic/pathologic investigation of a family consonant with the sarcoma, breast cancer and brain tumors, lung and laryngeal cancer, leukemia, lymphoma, and adrenalcortical carcinoma syndrome. The pattern of cancer expression involves all three germinal layers with transmission through multiple generations. Segregation of these cancers occur in a manner consonant with an autosomal dominant mode of genetic transmission. It is hoped that recognition of the significance of this tumor pattern within families will provide an impetus for cancer surveillance, control, and laboratory research in the quest for clues to biomarkers which correlate with its cancer-prone genotype.

Isolation of Actinomyces viscosus from two patients with clinical infections.

The isolation of Actinomyces viscosus from two patients is described. One was a case of multiple myeloma, the organism being found on blood culture; the other was a patient with a submandibular abscess. These are believed to be the first such isolations of A. viscosus in this country.