Results 81 to 90 of about 580,981 (302)

Estimation of species relative abundances and habitat preferences using opportunistic data [PDF]

open access: yes, 2017
We develop a new statistical procedure to monitor, with opportunist data, relative species abundances and their respective preferences for dierent habitat types. Following Giraud et al.
Calenge, Clément   +3 more
core   +2 more sources

Evaluating the African arid corridor hypothesis: A meta‐analysis including the phylogenetic and biogeographical history of Sesamothamnus

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise We examined the African arid corridor (AAC) disjunction pattern of vascular plants between northeastern and southwestern Africa in the context of geological and climatic events since the late Miocene. We developed a phylogenetic and biogeographical framework for the arid‐adapted genus Sesamothamnus (Pedaliaceae), a classic example of ...
John G. Zaborsky   +6 more
wiley   +1 more source

Variation in parrot jaw musculature

open access: yesThe Anatomical Record, EarlyView.
Interspecific morphological differences in some superficial jaw muscles of parrots. Abstract Psittaciformes, the order encompassing parrots and their relatives, are highly diverse and generally known for having a strong beaks used for multiple behaviors. The muscles related to the masticatory apparatus should reflect this functional complexity; however,
Ana Carolina L. Faillace   +3 more
wiley   +1 more source

Listado y anotaciones sobre la historia natural de las aves del litoral de San Andrés de Tumaco, Nariño (Colombia)

open access: yesBiota Colombiana, 2013
We present an updated list of the birds recorded for the coastal area of San Andrés de Tumaco, Nariño (Colombia), from observations and collecting records during several visits to the area, review of ornithological collections and available bibliographic
Johanna I. Murillo-Pacheco   +2 more
doaj   +1 more source

Broadening the semiaquatic scene: Quantification of long bone microanatomy across pinnipeds

open access: yesThe Anatomical Record, EarlyView.
Abstract Investigations of bone microanatomy are commonly used to explore lifestyle strategies in vertebrates. While distinct microanatomical limb bone features have been established for exclusively aquatic and terrestrial lifestyles, identifying clear patterns for the semiaquatic lifestyle remains more challenging.
Apolline Alfsen   +10 more
wiley   +1 more source

Osteological correlates of the respiratory and vascular systems in the neural canals of Mesozoic ornithurines Ichthyornis and Janavis

open access: yesThe Anatomical Record, EarlyView.
Abstract In birds, the neural canal houses a variety of anatomical structures including the spinal cord, meninges, spinal vasculature, and respiratory diverticula. Among these, paramedullary diverticula and the extradural dorsal spinal vein may leave behind osteological correlates in the form of pneumatic foramina and fossae, and a bilobed geometry of ...
Jessie Atterholt   +5 more
wiley   +1 more source

Records of threatened bird and mammal species in Mato Grosso do Sul State, Brazil

open access: yesData in Brief, 2018
We conducted a detailed review of threatened bird and mammal occurrence records obtained from surveys across Mato Grosso do Sul, midwestern region of Brazil which has an extent of 357,145 km2, aiming to support environmental and biodiversity conservation
Sylvia Torrecilha   +3 more
doaj   +1 more source

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

open access: yesThe Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

OBSERVAÇÃO DE AVES E ECOTURISMO EM ITAMARACÁ (PE): INSTRUMENTOS PARA O DESENVOLVIMENTO SUSTENTÁVEL / Birdwatching and ecotourism in Itamaracá (PE): an instrument to promote the sustainable development [PDF]

open access: yesSociedade & Natureza, 2006
Birdwatching and ecotourism in Itamaracá (PE): an instrument to promote the sustainabledevelopment. Birdwatching is a nature-related activity founded upon bird collections.
Gilmar Beserra de Farias   +1 more
doaj  

Komunitas Burung di Pulau Tidung Kecil Kepulauan Seribu

open access: yesAl-Kauniyah Jurnal Biologi, 2015
Tidung Kecil Island had potential as bird’s habitat because the condition of forest better than Tidung Besar. Bird’s habitat in Tidung Kecil Island also had bad potential because of logging and burned in vegetation areal for build and for activity of ...
Paskal Sukandar   +2 more
doaj   +1 more source

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