Habitat structure and regulation of local species diversity in a stony,...

Ecological Monographs;  May 1, 1998 ;   Downes, Barbara J. Lake, P.S. Schreiber, E.S.G. Glaister, Alena;   787 words ......the number of species in an area...influences on species richness (see Cornell...patterns in species richness. At local...whether and how species richness is regulated...regulation of species richness is the niche...dependent upon the spatial scale ...

Reversal of grazing impact on plant species richness in nutrient-poor vs....

Ecology;  December 1, 1998 ;   Proulx, Marc Mazumder, Asit;   787 words ...INTRODUCTION Species richness, the number of biological species...Tilman 1993). Often, biological species richness increases with increasing productivity...associated with a decline in species richness. Evidence for the ubiquity of...

Estimating species richness: the importance of heterogeneity in species...

Ecology;  April 1, 1998 ;   Boulinier, Thierry Nichols, James D. Sauer, John R. Hines, James E. Pollock, K.H.;   787 words ...INTRODUCTION Estimating species richness (i.e., the actual number of...are used as an estimate of species richness (e.g., in recent bird community...spatial or temporal trends in species richness or the effects of different...

Calibrating spatial and temporal species richness patterns in tropical...

Journal of Paleontology;  May 1, 2001 ;   Nehm, Ross H;   787 words ......consideration and compares Miocene to Recent species richness patterns in tropical American marginellid...used to standardize comparisons of species richness through time and space. Species richness in Prunum+Volvarina from the Miocene...

Do Non-native Plant Species Affect the Shape of Productivity-diversity...

The American Midland Naturalist;  January 1, 2008 ;   Drake, John M; Cleland, Elsa E; Horner-Devine, M Claire; Fleishman, Erica; Bowles, Christy; Smith, Melinda D; Carney, Karen; Emery, Sarah; Gramling, Joel; Vandermast, David B; Grace, James B;   787 words ......relationship between ecosystem processes and species richness is an active area of research and...relationship between productivity and species richness varies considerably among ecosystems...relationships between primary production and species richness. We tested this model using ...

BIODIVERSITY, DENSITY COMPENSATION, AND THE DYNAMICS OF POPULATIONS AND...

Ecology;  February 1, 2000 ;   MCGRADY-STEED, JILL MORIN, PETER J.;   787 words ...PETER J. MORIN [1] Abstract. Species richness can affect both the size and stability...generate an experimental gradient of species richness. Biweekly counts of population samples...nearly half of the species declined as species richness increased, demonstrating broad community-wi...

Effect of multiple electro-fishing on determining the structure of fish...

Folia Zoologica;  January 1, 2006 ;   Humpl, Martin; Lusk, Stanislav;   787 words ......used to estimate proportional fish species richness from single-pass electro-fishing and...individual fish species. Mean estimated species richness from single-pass sampling (p'^sub...95.4% and 96.2% of estimated total species richness for Rokytn and Loucka rivers, respectively...

Estimating species richness with capture-recapture models: choice of model...

Bird Study;  July 1, 2005 ;   Jiguet, Frederic; Renault, Olivier; Petiau, Aurelie;   787 words ......can be used confidently to estimate species richness when using Breeding Bird Survey (BBS...capture-recapture models for estimating species richness using data from large-scale, multi-observ...capture-recapture models for estimating species richness within 601 BBS sampling units. ...

The role of canopy gaps in maintaining vascular plant diversity at a...

Journal of the Torrey Botanical Society;  July 1, 2002 ;   Anderson, Kimberly L; Leopold, Donald J;   787 words ......Nelson Swamp, has high documented species richness and supports a large number of state-protected species. Understory cover and species richness at both the quadrat and gap scale...tested for correlations between gap species richness and light, wetness, and microsite...

Species richness in a riparian plant community along the banks of the...

International Journal of Sustainable Development and World Ecology;  March 1, 2005 ;   Jiang, Mingxi; Deng, Hongbing; Cai, Qinghua; Wu, Gang;   787 words ...Key words: China, plant species richness, altitude, riparian community...distribution of vascular plant species richness along an altitudinal gradient...examined. Total vascular plant species richness changed with elevation: it...

Another clue to where the species are. (differences in habitat explains...

Science News;  January 18, 1997 ;     457 words ......have all entered into discussions of species richness, with no clear resolution. Several...particularly a large-scale study in 1991 of species richness in North America, have focused on...the greater influence. The energy-species richness relationship breaks down in warm regions...

Analyses of fish species richness with spatial covariate.

Journal of the American Statistical Association;  September 1, 1997 ;   Hobert, James P. Altman, N.S. Schofield, Carl L.;   787 words ......changes in sulfate deposition on fish species richness, which we take as the number of species...we form prediction intervals for species richness given specific changes in pH values...sulfate deposition may affect fish species richness in the Adirondack region. 1.1 Data...

People and biodiversity linked. (journal extracts).

Ecos;  April 1, 2003 ;   Davidson, Steve;   379 words ......between human population density and species richness across the tropics. That is, people...plant, mammal, and reptile/amphibian species richness. Contrary to previous studies, the...correlation between people and breeding bird species richness was weak. Combined European endemic...

The relationship between local and regional diversity: comment. (response...

Ecology;  July 1, 1998 ;   Westoby, Mark;   787 words ......compiled data on local vs. regional species richness, and arranged it following a graphical...Caley and Schluter to represent local species richness were cells 50 x 50 km. (They also...cells 10 times that area, and regional species richness was counted in cells 500 x 500 km...

BIAS, PRECISION, AND ACCURACY OF FOUR MEASURES OF SPECIES RICHNESS.(Brief...

Ecological Applications;  August 1, 1999 ;   HELLMANN, JESSICA J. FOWLER, GARY W.;   787 words ...Abstract. Species richness is a widely used surrogate for...biological diversity. Because species richness is often central to ecological...and ability to estimate true species richness (accuracy). For small sample...