Ecological Monographs

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A comprehensive evaluation of predictive performance of 33 species distribution models at species and community levels
Ecological Monographs - Tập 89 Số 3 - 2019
Anna Norberg, Nerea Abrego, F. Guillaume Blanchet, Frederick R. Adler, Barbara J. Anderson, Jani Anttila, Miguel B. Araújo, Tad Dallas, David B. Dunson, Jane Elith, Scott D. Foster, Richard Fox, Janet Franklin, William Godsoe, Antoine Guisan, Robert B. O’Hara, Nicole Hill, Robert D. Holt, Francis K. C. Hui, Magne Husby, John Atle Kålås, Aleksi Lehikoinen, Miska Luoto, Heidi K. Mod, Graeme Newell, Ian Renner, Tomas Roslin, Janne Soininen, Wilfried Thuiller, Jarno Vanhatalo, David I. Warton, Matt White, Niklaus E. Zimmermann, Dominique Gravel, Otso Ovaskainen
AbstractA large array of species distribution model (SDM) approaches has been developed for explaining and predicting the occurrences of individual species or species assemblages. Given the wealth of existing models, it is unclear which models perform best for interpolation or extrapolation of existing d...... hiện toàn bộ
Fragmentation and dewatering transform Great Plains stream fish communities
Ecological Monographs - Tập 85 Số 1 - Trang 73-92 - 2015
Joshuah S. Perkin, Keith B. Gido, Arthur R. Cooper, Thomas F. Turner, Megan J. Osborne, Eric R. Johnson, Kevin B. Mayes
Biodiversity in stream networks is threatened globally by interactions between habitat fragmentation and altered hydrologic regimes. In the Great Plains of North America, stream networks are fragmented by >19 000 anthropogenic barriers, and flow regimes are altered by surface water retention and groundwater extraction. We documented the distribution of anthropogenic barriers and dry str...... hiện toàn bộ
Relationships of Ring Widths in Arid‐Site Conifers to Variations in Monthly Temperature and Precipitation
Ecological Monographs - Tập 44 Số 4 - Trang 411-440 - 1974
Harold C. Fritts
Two multivariate techniques for evaluation of ring—width and climatic relationships are described. One technique employs multiple regression on principal components of climate. Response functions are obtained which express in mathematical form the relative effect of monthly temperature and monthly precipitation during a 14—month period on ring—width variations. Response functions are calcu...... hiện toàn bộ
A Phytosociological Analysis of Species‐Rich Tropical Forest on Barro Colorado Island, Panama
Ecological Monographs - Tập 45 Số 3 - Trang 259-284 - 1975
Dennis H. Knight
Data on tree species composition and population structure are used as a source of ecological information on the species—rich forest of Barro Colorado Island, Panama Canal Zone (BCI). Thirteen stands, representing both the young and old forest on the Island, were sampled using 10 m ° 20 m quadrats for all individuals °2.5 cm dbh. Over 300 species were encountered and most were identified. T...... hiện toàn bộ
Intertidal Landscapes: Disturbance and the Dynamics of Pattern
Ecological Monographs - Tập 51 Số 2 - Trang 145-178 - 1981
Robert T. Paine, Simon A. Levin
The mussel Mytilus californianus is a competitive dominant on wave—swept rocky intertidal shores. Mussel beds may exist as extensive monocultures; more often they are an everchanging mosaic of many species which inhabit wave—generated patches or gaps. This paper describes observations and experiments designed to measure the critical parameters of a model of patch birth and death, and to us...... hiện toàn bộ
Forest Models Defined by Field Measurements: Estimation, Error Analysis and Dynamics
Ecological Monographs - Tập 66 Số 1 - Trang 1-43 - 1996
Stephen W. Pacala, Charles D. Canham, John Saponara, John A. Silander, Richard K. Kobe, Eric Ribbens
A spatial and mechanistic model is developed for the dynamics of transition oak—northern hardwoods forests in northeastern North America. The purpose of the model is to extrapolate from measurable fine—scale and short—term interactions among individual trees to large—scale and long—term dynamics of forest communities. Field methods, statistical estimators, and model structure were designed...... hiện toàn bộ
N balance and cycling of Inner Mongolia typical steppe: a comprehensive case study of grazing effects
Ecological Monographs - Tập 83 Số 2 - Trang 195-219 - 2013
Marcus Giese, Holger Brueck, Yingzhi Gao, Shan Lin, Markus Steffens, Ingrid Kögel‐Knabner, T. Glindemann, A. Susenbeth, F. Taube, Klaus Butterbach‐Bahl, Xunhua Zheng, Carsten Hoffmann, Yongfei Bai, Xingguo Han
Increasing grazing pressure and climate change affect nitrogen (N) dynamics of grassland ecosystems in the Eurasian steppe belt with unclear consequences for future delivery of essential services such as forage production, C sequestration, and diversity conservation. The identification of key processes responsive to grazing is crucial to optimize grassland management. In this comprehensive...... hiện toàn bộ
Cross‐Scale Morphology, Geometry, and Dynamics of Ecosystems
Ecological Monographs - Tập 62 Số 4 - Trang 447-502 - 1992
C. S. Holling
This paper tests the proposition that a small set of plant, animal, and abiotic processes structure ecosystems across scales in time and space. Earlier studies have suggested that these key structuring processes establish a small number of dominant temporal frequencies that entrain other processes. These frequencies often differ from each other by at least an order of magnitude. If true, e...... hiện toàn bộ
A Contribution to the Theory of Competing Predators
Ecological Monographs - Tập 48 Số 3 - Trang 337-349 - 1978
Shang-Hwa Hsu, Stephen P. Hubbell, Paul Waltman
This paper concerns the growth of 2 predator species competing exploitatively for the same prey population. The prey population grows logistically in the absence of predation, and the predators feed on the prey with a saturating functional response to prey density. Specifically, we assume that Michaelis—Menten kinetics or the Holling "disc" model describe how feeding rates and birth rates ...... hiện toàn bộ
Functional trait and phylogenetic tests of community assembly across spatial scales in an Amazonian forest
Ecological Monographs - Tập 80 Số 3 - Trang 401-422 - 2010
Nathan J. B. Kraft, David D. Ackerly
Despite a long history of the study of tropical forests, uncertainty about the importance of different ecological processes in shaping tropical tree species distributions persists. Trait‐ and phylogenetic‐based tests of community assembly provide a powerful way to detect community assembly processes but have seldom been applied to the same community. Both methods are well suited to testing...... hiện toàn bộ
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