Results 41 to 50 of about 19,566 (162)

Convergencias y divergencias entre dos comunidades coprófagas de montaña europeas (Coleoptera, Scarabaeoidea) [PDF]

open access: yes, 2007
We analyzed the altitudinal change in dung beetle species richness and the relative proportion of higher taxa, as well as the turnover in the type of distribution and range size of species in two mountain chains located at the two extremes of Europe ...
Chehlarov, V.   +2 more
core  

Estructura de un ecotono bosque Subalpino-pastos alpinos (Las Cutas, Ordesa, Pirineos Centrales) [PDF]

open access: yes, 1996
Describimos la estructura de un ecotono bosque subalpino-pastos alpinos en los Pirineos Centrales, que incluye los límites altitudinales del bosque y del árbol y está dominado por Pinus uncinata Ram. Para cada individuo de P.
Camarero Martínez, Jesús Julio   +1 more
core   +1 more source

Mapping the density of giant trees in the Amazon

open access: yesNew Phytologist, Volume 249, Issue 1, Page 152-168, January 2026.
Summary Tall trees (height ≥ 60 m) are keystone elements of tropical forests, strongly influencing biodiversity, carbon storage, and ecosystem resilience. Yet, their density and spatial distribution remain poorly quantified, especially in remote Amazonian regions, limiting our understanding of their ecological roles and contribution to forest–climate ...
Robson Borges de Lima   +20 more
wiley   +1 more source

Las comunidades de briófitos y su relación con la estructura de la vegetaticón fanerogamica en el gradiente altitudinal de la Serranía del Perijá (Cesar – Colombia) [PDF]

open access: yes, 2003
De la Serranía del Perijá (Cesar-Colombia), a lo largo del gradiente altitudinal se describen cinco comunidades de briófitos (dos en las franjas subandina baja – tropical y tres en las franjas subandina baja-alta) cuyas características dependen de ...
Aguirre Ceballos, Jaime   +1 more
core  

Great minds map alike: Citizen and expert distribution models of schistosome snail hosts in rural west Uganda

open access: yesEcological Solutions and Evidence, Volume 6, Issue 4, October–December 2025.
Citizen scientists and an expert jointly monitor Biomphalaria snails (the intermediate host of Schistosoma mansoni) in rural areas of southwest Uganda, generating over 4500 georeferenced records. By comparing expert‐ and citizen‐based distribution models under perfect and imperfect detection, we demonstrate that site type and NDVI consistently ...
Noelia Valderrama‐Bhraunxs   +5 more
wiley   +1 more source

Analysis of the Geographical Distribution of Gerridae (Hemiptera, Gerromorpha) in the Andes of Southwestern Colombia

open access: yesActa Biológica Colombiana, 2013
We present the geographical and altitudinal distribution of the Gerridae family on the western slopes of the Western Cordillera of Andes in southwestern Colombia.
Dora Nancy Padilla Gil   +1 more
doaj  

Aspectos biogeográficos y ecológicos del género Quercus (Fagaceae) en Michoacán, México

open access: yesActa Botanica Mexicana, 2018
Antecedentes y Objetivos: Michoacán es un estado de alta biodiversidad. Estudios taxonómicos estiman que existen de 30 a 37 especies de encinos en el estado; sin embargo, es incipiente la información sobre sus patrones de distribución.
Dolores Uribe-Salas   +2 more
doaj   +1 more source

Towards a revision of the South American genus Praocis Eschscholtz (Coleoptera, Tenebrionidae), with estimation of the diversity of each subgenus [PDF]

open access: yes, 2014
A review of the subgenera of the South American genus Praocis Eschscholtz (Pimeliinae: Praociini) is presented. Praocis comprises 77 species and 8 subspecies arranged in nine subgenera distributed in arid lands from Central Peru and Bolivia to the ...
Flores, Gustavo Ernesto   +1 more
core   +4 more sources

It is cool to be clear: Transparency induces a thermal cost in clearwing butterflies

open access: yesFunctional Ecology, Volume 39, Issue 9, Page 2452-2464, September 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract In butterflies, wing transparency raises the question of potential costs for vital functions, such as thermoregulation. The thermal melanism hypothesis posits that darker colorations enable higher absorption of solar radiation, leading to the prediction that such ...
Violaine Ossola   +8 more
wiley   +1 more source

High extinction risk of the endemic tree flora in a hyper‐diverse region of the Amazon

open access: yesPLANTS, PEOPLE, PLANET, Volume 7, Issue 4, Page 998-1010, July 2025.
The rapid global loss of biodiversity, especially in the Neotropics, underscores the need to understand how deforestation impacts endemic plant species' extinction risk and conservation status. Due to limited ranges and habitat specialization, endemics are particularly Vulnerable.
Juan Ernesto Guevara‐Andino   +2 more
wiley   +1 more source

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