Results 11 to 20 of about 1,463 (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

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

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

Light-related variation in sapling architecture of three shade-tolerant tree species of the Mexican rain forest [PDF]

, 2008
The crown architecture of three shade-tolerant tree species (two subcanopy and one mid-canopy) was analyzed in relation to the light regime of the forest understorey.
Bongers, F., Martinez-Sanchez, J.L., Meave, J.   +2 more
core   +2 more sources

Un modelo para el estudio del crecimiento del área corporal en bovinos de carne [PDF]

, 2018
Estimation formulas have been established for the establishment of body surface area (BSA), using live weight (LW) and body length for calculation. The objective of this work was to compare four estimation formulas of the BSA - Mitchell [0.09 × LW0.69 ...
Parés Casanova, Pere-Miquel
core   +3 more sources

Estructura de tallas, relación longitud-peso y factor de condición de cuatro peces nativos en la represa Nezahualcóyotl, Chiapas, México

Caldasia, 2023
Los estudios de relación longitud-peso y factor de condición permiten plantear un manejo adecuado de las especies nativas de peces y en la actualidad se desconocen dichos aspectos para la mayoría de especies que sostienen la pesquería ...
Gustavo Rivera-Velázquez, José Manuel Aguilar-Ballinas, Carlos Trejo-González, Miguel Ángel Peralta-Meixueiro   +3 more
doaj   +1 more source

Relación entre la infección por agallas, las variables estructurales y la anatomía de la madera de Rhizophora mangle L., en el golfo de Urabá (Colombia)

Actualidades Biológicas, 2017
En los últimos años se han identificado diversos problemas fitosanitarios, que causan el deterioro de los manglares del golfo de Urabá y en consecuencia han afectado a las comunidades que aprovechan sus productos.
Juan D. Mira-Martínez, Sara Betancur-Valencia, Ligia E. Urrego-Giraldo3   +2 more
doaj   +1 more source

Medición del índice de área foliar y su dinámica estacional en plantaciones de Eucalyptus urophylla S. T. Blake

Revista Mexicana de Ciencias Forestales, 2020
El índice de área foliar (IAF, m2 m-2) es un indicador de productividad en las plantaciones forestales y puede usarse para describir la respuesta de los árboles a la aplicación de prácticas silvícolas.
José Rene Valdez-Lazalde, Adrián Hernández-Ramos, Gregorio Ángeles-Pérez, Héctor Manuel de los Santos-Posadas, Jonathan Hernández-Ramos, Alicia Peduzzi, Omar Carrero   +6 more
doaj   +1 more source

Cambios de la proporcionalidad corporal durante el crecimiento en edades adolescentes [PDF]

, 2006
La adolescencia es una etapa crítica de la ontogenia caracterizada por importantes cambios en la velocidad de crecimiento de los tejidos que afectan al tamaño, forma y composición corporal, lo que origina profundas diferencias alométricas entre los ...
Cabañas Armesilla, M.D., Herrero de Lucas, A., Maestre López, M.I.   +2 more
core   +1 more source