Results 71 to 80 of about 43,239 (295)

Leaf anatomy of species of Calea sect. Lemmatium (Asteraceae) with a taxonomic emphasis

open access: yesNordic Journal of Botany, EarlyView.
Calea sect. Lemmatium is one of five sections of Calea (Neurolaeneae, Asteraceae), containing 12 species that are morphologically similar, which makes their identification difficult to non‐experts. The current study aimed to provide an anatomical characterization of species from Calea sect.
Maria José de Sousa Monteiro   +3 more
wiley   +1 more source

Rasgos biológicos de macroinvertebrados de ríos subtropicales: patrones de variación a lo largo de gradientes ambientales espacio-temporales

open access: yesEcología Austral, 2012
Los rasgos biológicos reflejan las tácticas de los organismos como respuesta al cambio ambiental. Analizamos la organización funcional del grupo EPT (Ephemeroptera, Plecoptera y Trichoptera) en una cuenca subtropical de montaña para evaluar si sus ...
María Celina Reynaga   +1 more
doaj  

Symbiont Polyphyly, Co-Evolution, and Necessity in Pentatomid Stinkbugs from Costa Rica

open access: yesFrontiers in Microbiology, 2014
Interdomain symbioses with bacteria allow insects to take advantage of underutilized niches and provide the foundation for their evolutionary success in neotropical ecosystems. The gut microbiota of 13 micro-allopatric tropical pentatomid species, from a
Kalia S.I. Bistolas   +3 more
doaj   +1 more source

Relatedness, trait evolution, and climatic niche divergence in mammalian island endemics

open access: yesOikos, EarlyView.
Island mammals have influenced ecological and evolutionary theory since Darwin, and many of them provide textbook examples of the dramatic morphological evolution that often occurs in island communities. However, patterns of evolution in the climatic niches of island mammals have yet to be fully explored.
Benjamin R. Shipley   +2 more
wiley   +1 more source

Changes in land cover drove the recent range expansion of a tropical farmland bird

open access: yesOikos, EarlyView.
Several bird species associated with agricultural landscapes in the Palearctic and in the Nearctic (i.e. farmland birds) have been experiencing severe population declines since the 1970s, mainly due to habitat loss driven by agricultural intensification.
Luana Jéssica Ferreira   +4 more
wiley   +1 more source

Historical anthropogenic stressors affect bird ecology and feather development in neotropical forests

open access: yesOikos, EarlyView.
Fragmentation and habitat loss driven by agricultural expansion have significantly affected bird ecology. Additionally, the growing use of agrochemicals impacts ecosystems and avian communities. Tools such as isotopic analysis provide reliable proxies for assessing organisms' habitat use and diet, and can also reflect environmental alterations, such as
Ana B. Navarro   +7 more
wiley   +1 more source

Revisão de Pseudoparlatoria (Hemiptera, Diaspididae) Review of Pseudoparlatoria (Hemiptera, Diaspididae)

open access: yesIheringia: Série Zoologia, 2008
Revisou-se a taxonomia das espécies incluídas em Pseudoparlatoria Cockerell, 1892, através do exame das séries tipo, exemplares obtidos nas localidades-tipo e material disponível em coleções científicas. Foram redescritas: P.
Vera Regina dos S. Wolff
doaj   +1 more source

Chiroptera Neotropical.

open access: yes, 1999
(Uploaded by Plazi for the Bat Literature Project) No abstract provided.
Miretzki, Michel   +1 more
openaire   +1 more source

A Conservation Assessment and Phylogenomic Evaluation of Protection Status in the Tropical Genus Heliconia L. (Zingiberales: Heliconiaceae)

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The primarily neotropical plant genus Heliconia has been cultivated commercially in gardens and nurseries for hundreds of years. Many of these same species are ecological keystones in their native habitats as important resources for herbivorous insects and pollinating hummingbirds, yet they face threats of habitat loss and degradation, competition with
W. John Kress   +3 more
wiley   +1 more source

Aboveground and soil carbon in novel forest ecosystems in Singapore: A case study of abandoned plantation secondary forests

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Novel forest ecosystems consist of forest ecosystems dominated by non‐native tree species that are difficult to restore to their pre‐human disturbance states. Nevertheless, novel forests can provide numerous ecosystem services, such as carbon sequestration and storage.
Zu Dienle Tan   +12 more
wiley   +1 more source

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