Results 1 to 10 of about 1,496 (100)

Cranial ecomorphology of turtles and neck retraction as a possible trigger of ecological diversification. [PDF]

Evolution, 2022
Abstract Turtles have a highly modified body plan, including a rigid shell that constrains postcranial anatomy. Skull morphology and neck mobility may therefore be key to ecological specialization in turtles. However, the ecological signal of turtle skull morphologies has not been rigorously evaluated, leaving uncertainties about the roles of ...
Hermanson G, Benson RBJ, Farina BM, Ferreira GS, Langer MC, Evers SW.   +5 more
europepmc   +2 more sources

Effects of body size on estimation of mammalian area requirements. [PDF]

Conserv Biol, 2020
Abstract Accurately quantifying species’ area requirements is a prerequisite for effective area‐based conservation. This typically involves collecting tracking data on species of interest and then conducting home‐range analyses. Problematically, autocorrelation in tracking data can result in space needs being severely underestimated.
Noonan MJ, Fleming CH, Tucker MA, Kays R, Harrison AL, Crofoot MC, Abrahms B, Alberts SC, Ali AH, Altmann J, Antunes PC, Attias N, Belant JL, Beyer DE, Bidner LR, Blaum N, Boone RB, Caillaud D, de Paula RC, de la Torre JA, Dekker J, DePerno CS, Farhadinia M, Fennessy J, Fichtel C, Fischer C, Ford A, Goheen JR, Havmøller RW, Hirsch BT, Hurtado C, Isbell LA, Janssen R, Jeltsch F, Kaczensky P, Kaneko Y, Kappeler P, Katna A, Kauffman M, Koch F, Kulkarni A, LaPoint S, Leimgruber P, Macdonald DW, Markham AC, McMahon L, Mertes K, Moorman CE, Morato RG, Moßbrucker AM, Mourão G, O'Connor D, Oliveira-Santos LGR, Pastorini J, Patterson BD, Rachlow J, Ranglack DH, Reid N, Scantlebury DM, Scott DM, Selva N, Sergiel A, Songer M, Songsasen N, Stabach JA, Stacy-Dawes J, Swingen MB, Thompson JJ, Ullmann W, Vanak AT, Thaker M, Wilson JW, Yamazaki K, Yarnell RW, Zieba F, Zwijacz-Kozica T, Fagan WF, Mueller T, Calabrese JM.   +78 more
europepmc   +2 more sources

Estudio del cráneo mediante morfometría geométrica en dos especies de Sylvilagus Gray, 1867 (Mammalia: Lagomorpha) [PDF]

Graellsia, 2019
Dentro del género Sylvilagus Gray, 1867 se reconocen, entre otras, las especies Sylvilagus brasiliensis (Linnaeus, 1758) y Sylvilagus floridanus (J.A. Allen, 1890) los estudios morfológicos disponibles de las cuales son muy extensos. Por ello, se realizó
Pere M. Parés-Casanova
doaj   +5 more sources

Características morfométricas de los otolitos de Ophichthus remiger provenientes de la pesquería en la costa ecuatoriana

Revista Científica de Ciencias Naturales y Ambientales, 2021
La anguila común (Ophichthus remiger) es una especie con valor comercial de la que son limitados los conocimientos sobre sus aspectos biológico-pesqueros, entre ellos las relaciones biométricas.
Justhine Guerrero Arias, René Zambrano, Esteban Elías   +2 more
doaj   +1 more source

Crescimento diferencial e nutrição em Catoprion mento (Characoidei). Peixe lepidófago da Amazônia. [PDF]

Acta Amazonica, 1979
Resumo Catoprion mento (Caracoldei) é um serrasalmídeo lepidófago que se alimenta principalmente de insetos, quando jovem; com 75 a 125 mm de comprimento padrão consome insetos e escarnas em igual porcentagem, tendo uma distinta preferência por escamas ...
Ivanzir Vieira, Jacques Géry
doaj   +1 more source

Radiocarbon estimates of age and growth for a dominant Amazon palm species

Biotropica, Volume 55, Issue 1, Page 7-12, January 2023., 2023
We used destructive sampling to assess 14C‐calibrated age and growth of five individuals of Oenocarpus bataua Mart. (ARECACEAE) from 7.35‐21.6 m of total height. The largest individual was 59‐years old. Age decreased from the collar to the top of the aboveground stem and was positively correlated with number of leaf‐scars and height.
Daniel Magnabosco Marra, Adriano J. N. Lima, Bruna de Oliveira dos Santos, Niro Higuchi, Susan Trumbore   +4 more
wiley   +1 more source

Manejo forestal sustentable de los recursos no maderables en el semidesierto del norte de México

Revista Mexicana de Ciencias Forestales, 2021
Los ecosistemas semiáridos del norte de México abarcan 70.79 millones de hectáreas; se caracterizan por su alta vulnerabilidad a la desertificación y la presencia de población rural en extrema marginación, quienes aprovechan los recursos forestales no ...
Eulalia Edith Villavicencio-Gutiérrez, Antonio Cano-Pineda, David Castillo-Quiroz, Adrián Hernández-Ramos, Oscar Ulises Martínez-Burciaga   +4 more
doaj   +1 more source

Plasticity and evolution shape the scaling of metabolism and excretion along a geothermal temperature gradient

Functional Ecology, Volume 36, Issue 5, Page 1303-1314, May 2022., 2022
Read the free Plain Language Summary for this article on the Journal blog. Abstract Physiological rates are heavily dependent on temperature and body size. Most current predictions of organisms’ response to environmental warming are based on the assumption that key physiological rates such as metabolism and excretion scale independently with body size ...
Javiera N. Benavente, David C. Fryxell, Michael T. Kinnison, Eric P. Palkovacs, Kevin S. Simon   +4 more
wiley   +1 more source

ESTIMATION OF BIOMASS AND CARBON STORED IN VEGETATION AND SOIL IN THE ZONE OF INFLUENCE OF THE "PURISIMA" DAM, STATE OF GUANAJUATO, MEXICO

Tropical and Subtropical Agroecosystems, 2023
Background. Determining carbon in forest ecosystems is essential to estimate its influence on climate change mitigation. This study aimed to determine the carbon stored in the vegetation and soil of the Protected Natural Area of the "La Purísima" Dam and
Fernando Carrillo-Anzures, Miguel Acosta-Mireles, Matilde Hernandez-Santiago, Ramiro Perez-Miranda, Martin Enrique Romero-Sanchez   +4 more
doaj   +1 more source

Predicción de biomasa y carbono en plantaciones clonales de Tectona grandis L.f.

Colombia Forestal, 2021
Los modelos matemáticos para predecir biomasa son en la actualidad una opción que facilita y mejora el cálculo de la capacidad de mitigación del cambio climático de un ecosistema, pues generan información fundamental para establecer índices nacionales de
William Fonseca González, Carlos Ávila Arias, Rafael Murillo Cruz, Marilyn Rojas Vargas   +3 more
doaj   +1 more source