Results 31 to 40 of about 50,832 (169)

Asignación de recursos e influencia de los cotiledones en el crecimiento de plántulasde Nectandra ambigens (Blake) C. K. Allen (Lauraceae) en una selva tropical húmeda

open access: yesBotan‪ical Sciences, 2004
En la selva tropical húmeda, las especies cuyas plántulas tienen cotiledones, endospermo, o ambos, que funcionan como órganos de almacenamiento de reservas, tienen mayores probabilidades de permanecer en la regeneración de avanzada.
Guadalupe Barajas-Guzmán   +1 more
doaj   +1 more source

Heidi Asbjornsen Associate Professor of Natural Resources, COLSA, travels to Costa Rica [PDF]

open access: yes, 2012
Experiential Student Learning and Collaborative Research: Understanding Tropical Ecosystem Response to Climate Change from Leaves to Landscapes. During January 2012, I traveled to Costa Rica to visit potential field sites for a future UNH J-term course ...
Asbjornsen, Heidi
core   +2 more sources

Open letter: The need for a site‐based biodiversity standard measuring and certifying impacts from nature‐based projects

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Despite growing investment in restoration, weak accountability and poor biodiversity monitoring mean many projects fail to achieve ecological recovery. The Global Biodiversity Standard (TGBS) offers a practical way to ensure that restoration finance delivers measurable gains for nature.
David Bartholomew   +254 more
wiley   +1 more source

From pollen provision to pollinator: Species‐specific sterol assimilation by wild bees in urban landscapes

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Human‐driven landscape change, particularly urbanization, is reshaping pollinator communities, yet the functional traits that mediate species persistence remain poorly understood. Dietary specialization is commonly used to predict species vulnerability.
Yan Yang   +5 more
wiley   +1 more source

A guide to field stations in the tropics : I. Mexico [PDF]

open access: yes, 2013
Herbaria: The National Council for the Flora of Mexico (Consejo Nacional de la Flora de México) recently published a revised edition of the catalogue of Mexican herbaria (Arreguín & Valenzuela 1986). This contains information on 58 institutional herbaria
Delgadillo M., Claudio
core  

Check list of ground-dwelling ant diversity (Hymenoptera: Formicidae) of the Iguazú National Park with a comparison at regional scale [PDF]

open access: yes, 2015
We describe the ant fauna of Iguazú National Park (INP), a region of high biodiversity andendemism in northeastern Argentina that includes the southernmost protected area ofthe Atlantic Forest (AF).
Achury, R.   +6 more
core   +2 more sources

Ecología del suelo en la selva tropical húmeda de México

open access: yesACTA ZOOLÓGICA MEXICANA (N.S.), 2004
El libro fue editado por Javier älvarez (Facultad de Ciencias, UNAM) y Edna Naranjo (Instituto de Biología, Unam) y posee contribuciones de 21 autores, los cuales pertenecen a varias entidades del país y el extranjero (la Facultad de Ciencias y los Institutos de Biología, Geología y Geografía, UNAM; el Instituto de Ecología, A.C., Xalapa; La UAM ...
openaire   +1 more source

Availability of a Keystone Plant Resource Reduces Niche Overlap and Drives Distinct Species‐Specific Changes in Niche Breadth Among Small Rodents

open access: yesIntegrative Zoology, EarlyView.
We investigated how three rodent species respond to the seasonal availability of Araucaria angustifolia seeds. While Oligoryzomys spp. increased seed consumption and abundance during seed production, the more insectivorous Akodon paranaensis maintained a broader diet.
Adriana A. Perini, Emerson M. Vieira
wiley   +1 more source

A High‐Throughput Phenotyping Pipeline for Quinoa (Chenopodium quinoa) Panicles Using Image Analysis With Convolutional Neural Networks

open access: yesPlant Breeding, EarlyView.
ABSTRACT Quinoa is a grain crop with excellent nutritional properties that has attracted global attention for its potential contribution to future food security in a changing climate. Despite its long history of cultivation, quinoa has been improved little by modern breeding and is a niche crop outside its native cultivation area.
Flavio Lozano‐Isla   +3 more
wiley   +1 more source

Additions and corrections to the knowledge of the foliicolous lichen flora of Costa Rica : the genus Fellhanera, with notes on Bacidia pauciseptata [PDF]

open access: yes, 1997
This further contribution to the knowledge of the foliicolous lichen flora of Costa Rica provides a detailed account on the genus Fellhanera. In total, 25 species and five undescribed taxa are treated.
Lücking, Robert
core  

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