Molecular evolution, adaptive radiation, and geographic diversification in the amphiatlantic family Rapateaceae: evidence from ndhF sequences and morphology.

Rapateaceae (16 genera, approximately 100 species) is largely restricted to the tepuis and sandplains of the Guayana Shield in northern South America, with Maschalocephalus endemic to West Africa. The family has undergone extensive radiation in flower form, leaf shape, habit, and habitat. To analyze the evolution of these distributions and traits, we derived a molecular phylogeny for representatives of 14 genera, based on sequence variation in the chloroplast-encoded ndhF gene. The lowland subfamily Rapateoideae is paraphyletic and includes the largely montane subfamily Saxofridericioideae as a monophyletic subset. Overall, the morphological/anatomical data differ significantly from ndhF sequences in phylogenetic structure, but show a high degree of concordance with the molecular tree in three of four tribes. Branch lengths are consistent with the operation of a molecular clock. Maschalocephalus diverges only slightly from other Monotremae: it is the product of relatively recent, long-distance dispersal, not continental drift--only its habitat atop rifted, nutrient-poor sandstones is vicariant. The family appears to have originated approximately 65 Mya in inundated lowlands of the Guayana Shield, followed by: (1) wide geographic spread of lowland taxa along riverine corridors; (2) colonization of Amazonian white-sand savannas in the western Shield; (3) invasion of tepui habitats with frequent speciation, evolution of narrow endemism, and origin of hummingbird pollination in the western Shield; and (4) reinvasion of lowland white-sand savannas. The apparent timing of speciation in the Stegolepis alliance about 6-12 Mya occurred long after the tepuis began to be dissected from each other as the Atlantic rifted approximately 90 Mya. Given the narrow distributions of most montane taxa, this suggests that infrequent long-distance dispersal combined with vicariance accounts for speciation atop tepuis in the Stegolepis alliance.

Barriers to pain management in hospice: a study of family caregivers.

Cancer-related pain not only affects the patient but the family/caregiver as well. The purpose of this study was to examine concerns about reporting pain and using analgesics in a sample of primary caregivers of cancer patients receiving care from a hospice program. The Barriers Questionnaire (BQ), an instrument designed to measure eight common barriers to adequate management of cancer pain, was administered to 37 persons identified as primary caregivers. Between 62 percent and 100 percent of the caregivers reported having at least some agreement with the various concerns that are barriers to reporting pain and using analgesics, and 3 percent to 43 percent reported having strong agreement. The subscales with the highest means were fear of opioid side effects, fear of addiction, the belief that increasing pain signifies disease progression, and the fear of injections. Caregivers who were older and less educated were more likely to believe that reporting pain may distract the physician from treating or curing the cancer. In addition, caregivers with lower educational levels had higher scores on the overall BQ. Finally, caregivers of patients who reported pain was not a problem on program admission had greater concerns about tolerance and were more likely to believe that "good" patients do not complain. The caregiver, often, with time and the declining abilities of the patient, becomes the first line decision maker regarding the patient's care and treatment. Understanding caregiver perspectives is important for continued success with managing pain in hospice and, arguably, all settings.

Concerns about analgesics among patients and family caregivers in a hospice setting.

Patients receiving curative treatment for cancer have concerns about reporting pain and using analgesics. These concerns are associated with underutilization of analgesics. To extend knowledge about such concerns to the context of palliative care, the concerns of hospice patients and family caregivers were compared. Within 5 days of admission to hospice, 35 patients with cancer and their caregivers each completed a measure of eight concerns such as fear of addiction, worry about tolerance, and worry about side effects. There was no correlation between caregiver and patient concerns and means for the two groups were similar, indicating that within a given dyad either the patient or the caregiver may have greater concerns. The findings highlight the need for patient and caregiver education about reporting pain and using analgesics.

The southland flood, an organizational approach to disaster recovery

This paper provides a synopsis of the southland flood in New Zealand in January 1984 and sets out the organizational approach that was adopted for relief and recovery in the affected communities. The flood was the largest disaster in New Zealand since the devastating napier earthquake in 1931. An estimated 5000 people evacuated their homes and $50 million forth of property was damaged. The recovery program did not run smoothly. Despite many problems, however, a structural organization was established which greatly assisted the recovery of the southland community