In the northeastern region of the State of Rio Grande do Sul in Southern Brazil, specifically in the Rio dos Sinos basin, urban parks are an important alternative for the conservation of the remaining natural habitats, as well as for the maintenance and perpetuation of biodiversity. A floristic survey of fern and lycophyte species in the Parque Municipal Henrique Luís Roessler (PMHLR) (29º 41' ...

We submitted tree species occurrence and geoclimatic data from 59 sites in a river basin in the Atlantic Forest of southeastern Brazil to ordination, ANOVA, and cluster analyses with the goals of investigating the causes of phytogeographic patterns and determining whether the six recognized subregions represent distinct floristic units. We found that both climate and space were significantly (p...

Active economic development of the Lower Angara zone requires creation a scientific basis for long-term monitoring state natural ecosystems. The paper gives an assessment diversity vegetation cover in potential influence Nizhneboguchanskaya HPP. An analysis its typological structure on landscape-ecological is given. results DCA ordination and interpretation leading axes variation demonstrated p...

1. The shallow ponds of the nature reserve ‘De Maten’ form a metacommunity, in which individual ponds are highly interconnected via a system of overflows and rivulets. This study reports on the relations between cladoceran species richness and (a) connectivity patterns and (b) local environmental variables. 2. No relation was found between local species richness and three connectivity variables...

Old-growth forests in the Pacific Northwest are known to support high levels of diversity across the varied landscapes they occupy. On 1200 plots distributed over the Cascade Mountains in southwestern Washington, climatic, physiographic, edaphic and floristic data were collected to evaluate the ecological characteristics of these coniferous forests and develop a classification framework useful ...

KRASZEWSKI, S. E. (Land Resources Program, University of Wisconsin-Madison, Madison, WI 53706) AND D. M. WALLER. (Department of Botany, University of Wisconsin-Madison, Madison, WI 53706). Fiftyfive year changes in species composition on dry prairie remnants in south-central Wisconsin. J. Torrey Bot. Soc. 135: 236–244. 2008.—Ten dry prairie remnants in south-central Wisconsin first sampled in 1...

Studies on the residual impact of logging on the diversity and composition of tropical forests are scarce in India. We examined the impact of selective logging on tree species richness, composition and structure prevalent after 27 years. Trees ≥ 30 cm girth at breast height were inventoried in four 1 ha plots in selectively logged patches and two 1 ha plots in an adjacent unlogged patch of lowl...

Conservation of Biological Diversity will be major challenge for the ecologist in the forthcoming century. In-situ conservation, biotechnology tools for conservation and prospecting, understanding genetic variability, species habitat relationship and allowing evolutionary process of speciation are some of the challenges. India is one of the mega biodiversity centers and is also known for its tr...