Results 1 to 10 of about 1,373 (157)

The complete mitochondrial genome of the Critically Endangered Saba Green Iguana, Iguana iguana (Squamata: Iguanidae) [PDF]

open access: yesMitochondrial DNA. Part B. Resources, 2023
The populations of native iguanas in the Caribbean Lesser Antilles are threatened by the wide occurrence and spread of non-native iguanas. Until recently, competitive hybridization was not believed to threaten the Saba Green Iguana, a subpopulation of ...
Matthijs P. van den Burg   +4 more
doaj   +2 more sources

Phylogenetic diversity and North Andean block conservation [PDF]

open access: yesPeerJ, 2023
Background The Northern Andean Block (NAB) harbors high biodiversity; therefore, it is one of the most important areas in the Neotropics. Nevertheless, the settlement of several human populations has triggered the rapid transformation of ecosystems ...
Omar Daniel Leon-Alvarado   +1 more
doaj   +3 more sources

SOBRE LA GEOGRAFÍA DE LA VIDA: LA BIOGEOGRAFÍA

open access: diamondCuadernos de Geografía de la Universitat de València, 2021
Esta recensión bibliográfica desborda la mera descripción de los contenidos del libro reseñado, La geografía de la vida: la biogeografía. Integra, además, tanto una introducción acerca del lugar de la biogeografía en el contexto de los campos de ...
Oliver Gutiérrez-Hernández
doaj   +3 more sources

Dissimilar climatic niche is predictive of contrasting historical demographic changes and altitudinal shifts in related oak species (Quercus). [PDF]

open access: yesAm J Bot
Abstract Premise Comparative surveys allow us to characterize the influence of specific factors on population genetic diversity and structure. We conducted a comparative phylogeographic study for three Mexican oak species to identify how their climatic niche preferences and breadth may have influenced historical demography and range shifts during ...
Gaytan-Legaria R   +3 more
europepmc   +2 more sources

The Early Development of the Blue-Eye Cichlid, Cryptoheros spilurus (Cichliformes: Cichlidae). [PDF]

open access: yesEvol Dev
We document the early development of Cryptoheros spilurus, highlighting rapid cranial differentiation, sensory organ formation, and fin development. Ontogenetic allometry and ultrastructural traits reveal functional adaptations for early foraging and locomotion, offering insights into ecological success and the developmental basis of cichlid ...
Contreras-Tapia RA   +5 more
europepmc   +2 more sources

Modelos predictivos en Biogeografía: aplicación para la modelización de nichos ecológicos en Geografía Física

open access: greenBoletín de la Asociación de Geógrafos Españoles, 2018
La Biogeografía está en el origen de la Geografía moderna. Desde el principio, el estudio de la distribución de los seres vivos y la interpretación de los nichos ecológicos ha constituido uno de los frentes más activos de la Geografía Física. Sin embargo,
Oliver Gutiérrez Hernández   +3 more
doaj   +8 more sources

Assessing Vulnerability of Relevant Sites for Amphibian Conservation Through Spatiotemporal Analyses of Global Change Factors in Europe

open access: yesEarth's Future
Amphibians are among the most imperiled vertebrates, threatened by habitat loss and climate change. Despite significant advances in our understanding of these species, there remains a critical gap in identifying the most urgent areas for conservation ...
Rocío Tarjuelo   +2 more
doaj   +2 more sources

De Humboldt a Darwin: una inflexión clave en la historia de la biogeografía

open access: diamondGeosul, 2008
  Comparada con la biogeografía humboldtiana, las tesis biogeográficas que Darwin desarrolla en El Origen de las Especies presentan dos novedades importantes. La primera de ella es teórica: para Darwin la distribución actual de los seres vivos está más
Gustavo Andrés Caponi
doaj   +3 more sources

Riqueza de mamíferos no voladores en un remanente de bosque andino en Soacha (Cundinamarca, Colombia)

open access: yesGraellsia, 2023
La región andina de Colombia alberga la mayor parte de la población humana en el país, lo que conlleva a que se genere un gran impacto ambiental en los distintos biomas de montaña, provocado por diversas actividades antrópicas, tales como: la ...
Vanessa Díaz-S‍   +4 more
doaj   +1 more source

Assessing Climate Change Exposure for the Adaptation of Conservation Management: The Importance of Scale in Mountain Landscapes

open access: yesLand, 2022
Vulnerability of mountain ecosystems to climate change depends on the capacity of topographic variation to provide heterogeneous microclimates and rates of climatic change.
Mónica Gómez-Vadillo   +3 more
doaj   +1 more source

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