A double-label study of efferent projections from the Edinger-Westphal nucleus in goldfish and kelp bass

The Edinger-Westphal nucleus in goldfish was identified by retrograde labeling from the ciliary ganglion. In the same animals a few neurons near this nucleus (perinuclear Edinger-Westphal neurons) were labeled by a different retrograde tracer injected into the cerebellum. No double-labeled cells were found. Similar results were obtained in kelp bass, except that in this species no cerebellar-projecting perinuclear neurons were observed. Cerebellar-projecting Edinger-Westphal neurons have previously been described in some mammals, but not in other vertebrates. Therefore the homology of cerebellar-projecting cells of the Edinger-Westphal region in mammals and teleost fishes is doubtful

REGENERAÇÃO NATURAL DO COMPONENTE ARBÓREO E ARBUSTIVO DO PARQUE NATURAL MUNICIPAL DE SANTO ÂNGELO-RS

O conhecimento do comportamento silvicultural das espécies é de extrema importância para o sucesso na implantação de projetos de restauração florestal. Este trabalho tem por objetivo descrever a regeneração natural da área do Parque Natural Municipal de Santo Ângelo – RS (28º19’17” S 54º15’52” W). Para o estudo utilizou-se parcelas circulares, com 1m de raio. Foram inventariados os exemplares arbóreos e arbustivos com altura maior que 30 cm e DAP ≤ 5cm. Os parâmetros fitossociológicos avaliados foram: densidade, frequências absoluta e relativa, e altura média. Foram encontrados 78 indivíduos, distribuídos em 26 espécies, pertencentes a 24 gêneros e 14 famílias botânicas. As famílias mais representativas foram Lauraceae, Sapindaceae, Myrtaceae, Fabaceae, Melastomataceae e Solanaceae

The importance of human dimensions research in managing harmful algal blooms

Author Posting. © Ecological Society of America, 2010. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Frontiers in Ecology and the Environment 8 (2010): 75–83, doi:10.1890/070181.Harmful algal blooms (HABs) are natural freshwater and marine hazards that impose substantial adverse impacts on the human use of coastal and marine resources. The socioeconomic and health impacts of HABs can be considerable, thereby making a case for “human dimensions” research to support HAB response. Human dimensions research is multidisciplinary, integrating social science, humanities, and other fields with natural science to enhance resource management by addressing human causes, consequences, and responses to coastal environmental problems. Case studies reported here illustrate the importance of human dimensions research. Incorporating such research into the scientific agenda – as well as into management decisions of public agencies concerned with natural resource management, environmental protection, and public health and welfare – requires the development of both strategic guidance and institutional capacity. The recent development of a multi-agency research strategy for HAB response and a strategic plan for human dimensions research represent two important steps in this direction.This paper was developed with partial support from NOAA’s National Centers for Coastal and Ocean Science