Results 11 to 20 of about 80,440 (223)

Osmoxylon-like fossils from early Eocene South America: West Gondwana-Malesia connections in Araliaceae. [PDF]

open access: yesAm J Bot
Abstract Premise Araliaceae comprise a moderately diverse, predominantly tropical angiosperm family with a limited fossil record. Gondwanan history of Araliaceae is hypothesized in the literature, but no fossils have previously been reported from the former supercontinent.
Wilf P.
europepmc   +2 more sources

The taxonomic status of Farlowella colombiensis Retzer & Page 1997 with comments on species of the F. acus species group (Loricariidae: Loricariinae). [PDF]

open access: yesJ Fish Biol
Abstract The genus Farlowella has been historically challenging, in part due to the difficulty in defining diagnostic characters for defining and identifying the species. Farlowella colombiensis is one such example, whose diagnostic characters are based on caudal‐fin colour pattern, ventral pattern of body cover and anatomical details of the head, such
Melo-Ortiz OE   +4 more
europepmc   +2 more sources

Lepidoptera research in Puerto Rico: Reconnecting with historical legacies to guide future priorities

open access: yesBiotropica, Volume 55, Issue 6, Page 1215-1232, November 2023., 2023
In Puerto Rico, a tropical archipelago in a region characterized by complex socio‐economic and environmental change, ecological knowledge of the local insect fauna is scarce. Greater emphasis on ecological monitoring of model insect groups like Lepidoptera could provide insight into the effects of global change on tropical biodiversity and contribute ...
Caitlin N. Terry   +3 more
wiley   +1 more source

Life‐stage and sex influence Philornis ectoparasitism in a Neotropical woodpecker Melanerpes striatus with essential male parental care

open access: yesIbis, Volume 165, Issue 4, Page 1235-1250, October 2023., 2023
The nestlings of many Neotropical bird species suffer from Philornis (Diptera: Muscidae) ectoparasitism. Although nestlings are typically considered the intended targets, recent work indicates that Philornis infest adult birds more frequently than previously appreciated, yet few studies have concurrently surveyed nestlings and adults for Philornis in ...
Joshua B. LaPergola
wiley   +1 more source

The Art of Assemblage at La Venta

open access: yesArt History, Volume 45, Issue 4, Page 832-857, September 2022., 2022
How might the meaning of monumental sculpture be ephemeral? At La Venta, objects from greenstone figurines to massive basalt sculptures were recycled, reworked, and moved around the landscape, their new configurations and associations creating new kinds of meaning and enabling new kinds of ritual interaction.
Claudia Brittenham
wiley   +1 more source

Conservation of aquatic insects in Neotropical regions: A gap analysis using potential distributions of diving beetles in Cuba

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 31, Issue 10, Page 2714-2725, October 2021., 2021
Abstract Human activities are an increasing threat to Neotropical freshwater ecosystems, with the potential extinction of thousands of aquatic species. Despite this, knowledge about the effectiveness of protected area networks in protecting aquatic insects in this biogeographical region is very limited.
Yoandri S. Megna   +2 more
wiley   +1 more source

Mycorrhizal science outreach: Scope of action and available resources in the face of global change

open access: yesPLANTS, PEOPLE, PLANET, Volume 3, Issue 5, Page 506-522, September 2021., 2021
Mycorrhizal associations are acknowledged as key components of global ecosystem functioning. This is especially relevant in the context of global change, since they contribute to the amelioration of adverse soil conditions and play crucial roles in agriculture.
Patricia Silva‐Flores   +14 more
wiley   +1 more source

Macraucheniidae y Proterotheriidae (Mammalia, Litopterna) de Quebrada Fiera (Oligoceno tardío), Mendoza, Argentina [PDF]

open access: yes, 2019
In this contribution we present new specimens of Litopterna recovered during the last decade in Quebrada Fiera (Mendoza Province, Argentina), whose fossiliferous sediments, currently recognized as the base of Agua de la Piedra Formation, are assignable ...
Cerdeño Serrano, Maria Esperanza   +2 more
core   +1 more source

Leones de piedra romanos de Las Cabezas de San Juan (Sevilla): a propósito de un nuevo ejemplar identificado [PDF]

open access: yes, 2000
Se estudian esculturas romanas de leones de piedra de época republicana procedentes de Las Cabezas de San Juan y de Lebrija (Sevilla), a propósito de la identificación de un nuevo ejemplar conservado en el Museo Arqueológico de Osuna y en el marco de la ...
Beltrán Fortes, José
core   +1 more source

Detalles de los libros de notas de Niels Fock y sus hallazgos

open access: yesRevista del Museo de La Plata, 2020
En 1958 el antropólogo Niels Fock del Museo Nacional de Dinamarca, emprendió una travesía por la zona chaqueña argentina, entre las provincias de Salta, Chaco y Formosa, donde hizo un estudio de las comarcas indígenas de los matacos.
Svend Aage Buus
doaj   +1 more source

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