Results 141 to 150 of about 7,070,887 (229)

Human pressure, habitat heterogeneity and species traits jointly determine the level of dark diversity in coastal fish communities

Ecography, EarlyView.
Understanding how anthropogenic pressures and environmental gradients shape coastal fish communities is a central question in biogeography and marine conservation. Yet, the set of species expected to occur at a site given ecological conditions but being absent – the so‐called dark diversity – has received far less attention than observed species, even ...
Loïc Sanchez, Jeanne Rolland, Adèle Barroil, Célia Bertrand, Agathe Blandin, Pierre Boissery, Thomas Bockel, Eric Charbonnel, Julie Deter, Régis Hocdé, Florian Holon, Jean‐Baptiste Juhel, Nicolas Loiseau, Bastien Macé, Anthony Maire, Stéphanie Manel, Marie Orblin, Franck Pichot, Jean‐Jacques Riutort, Lola Romant, Rémy Simide, Alice Valentini, Laure Velez, David Mouillot   +23 more
wiley   +1 more source

Associations between mycorrhizal dominance and woody species diversity shift with stand development and climate across subtropical and tropical forests in Taiwan

Ecography, EarlyView.
Mycorrhizal symbioses influence woody species diversity, but whether this association shifts with forest stand development remains underexplored. Using forest inventory data across subtropical and tropical forests in Taiwan, we found that woody species diversity was lower in ectomycorrhizal (EM)‐dominated than in arbuscular mycorrhizal (AM)‐dominated ...
Albert Vilà‐Cabrera, Julen Astigarraga, Kirsten S.W. O'Sullivan, Karina E. Clemmensen, Henna Tyyskä, Sarah Greenwood, Josep Padullés Cubino, Jan‐Chang Chen, Alistair S. Jump   +8 more
wiley   +1 more source

ON DIVISIBILITY PROPERTIES OF SOME DIFFERENCES OF THE CENTRAL BINOMIAL COEFFICIENTS AND CATALAN NUMBERS

, 2014
We discuss divisibility properties of some differences of the central binomial coefficients and Catalan numbers. The main tool is the application of various congruences modulo high prime powers for binomial coefficients combined with some recurrences relevant to these combinatorial quantities.
openaire   +4 more sources

Iraq-Iran central and southern border areas. [cartographic material]

, 1980
Shows oil fields, gas fields, pipelines, refineries, and tanker terminals.; Relief shown by shading and spot heights.; "504634 9-80."; Also available online http://nla.gov.au/nla.map-vn2811725.Iran central and southern border areasIran central and ...
[United States. Central Intelligence Agency].
core  

Taxon‐dependent multisite species turnover in fragmented habitats: comparing zeta diversity across birds, butterflies, and cursorial hunting spiders

Ecography, EarlyView.
Habitat fragmentation alters species diversity and reshapes community composition. However, conventional pairwise approaches to compositional variation (i.e. beta diversity metrics) do not explicitly characterize how species sharing or turnover change with the number of habitat patches.
Shirui Yu, Yufeng Zhou, Qiyu Jiang, Jie Xie, Yan Wang, Qiwen Du, Shang Sheng, Yaqian Cui, Kai Zhang, Zhixin Wen, Hao Yu, Yu Xu   +11 more
wiley   +1 more source

Central Balkan region [cartographic material].

, 2000
"802725AI (R02592) 11-00"; Map of Central Balkan region showing international boundaries, countries and cities.; Also available online http://nla.gov.au/nla.map ...
United States. Central Intelligence Agency.
core  

Butterfly abundances but not patch occupancy buffered by vegetation heterogeneity during climatic extremes

Ecography, EarlyView.
As extreme climatic events are becoming more frequent, we need to understand what mechanisms could buffer populations to ensure their persistence. Fragmented populations may be especially vulnerable, as exemplified by species with metapopulation dynamics whose persistence is determined by a precarious balance between frequent local extinctions and ...
Natalie E. van Dis, Mirkka M. Jones, Pekka Niittynen, Miska Luoto, Jukka Sirén, Marjo Saastamoinen   +5 more
wiley   +1 more source

Wolves and humans both shape patterns of deer browsing in a temperate forest ecosystem of Central Europe

Ecography, EarlyView.
Predator–prey interactions can trigger behavioural responses in ungulates, influencing their space‐use and foraging behaviour and, in turn, indirectly affecting browsing pressure. Changes in browsing pressure can affect plant recruitment and species composition, shaping forest regeneration through predator‐mediated trophic cascades.
Walter Di Nicola, Henrich Maik, Hannah Pepe, Marc Velling, Ye Htet Lwin, Suzanne Theresia van van Beeck Calkoen, Vorel Ales, Chris Smit, Dries Kuijper, Marco Heurich   +9 more
wiley   +1 more source

Infinite Product Representation for Central Binomial Coefficients

We introduce an elegant infinite product for central binomial coefficients.
openaire   +4 more sources

Leading coefficient in the Hankel determinants related to binomial and $q$-binomial transforms

It is a standard result that the Hankel determinants for a sequence stay invariant after performing the binomial transform on this sequence. In this work, we extend the scenario to $q$-binomial transforms and study the behavior of the leading coefficient
Chern, Shane, Li, Shuhan, Jiu, Lin, Wang, Liuquan   +3 more
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