Results 21 to 30 of about 1,102,522 (168)

Habitat Loss Shapes Isotopic Niche Responses of a Didelphid Opossum to Fragmentation in Neotropical Semideciduous Dry Forests of Central Brazil. [PDF]

open access: yesEcol Evol
Stable isotope analysis indicates that fragmentation and habitat loss in semideciduous dry forests in the Brazilian Cerrado drive trophic niche shifts in Gracilinanus agilis, with potential consequences for its role as a seed disperser. ABSTRACT Habitat loss and fragmentation have notable effects on species' trophic ecology, often most pronounced in ...
de Mattos I   +4 more
europepmc   +2 more sources

Neotropical ants are at greater risk from global warming in savanna than in adjacent forest. [PDF]

open access: yesEcology
Abstract Determining how the thermal tolerances of species are related to climatic conditions at multiple spatial scales can improve our understanding of species distributions and their vulnerability to climate change. We compare the warming tolerances—a metric of warming vulnerability—of arboreal and ground‐dwelling ants from savanna and adjacent ...
Zuanon LA   +3 more
europepmc   +2 more sources

Reconstruction of Marine Commercial Landings for the Brazilian Industrial and Artisanal Fisheries From 1950 to 2015

open access: yesFrontiers in Marine Science, 2021
Landing data are the most basic information used to manage fisheries, although they are often unavailable or incomplete. The objective of this work was to reconstruct the national database of marine commercial landings for the Brazilian industrial and ...
Kátia Meirelles Felizola Freire   +26 more
doaj   +1 more source

Análise econômica da produção da sardinha na região sudeste do Brasil Economical analysis of the sardine yield in southeastern Brazil

open access: yesBrazilian Journal of Oceanography, 1981
A surplus-yield model of Schaefer (1954; 1957) was used to study a maximum sustainable yield of the Brazilian sardine. Applying the prices of sardine and operation cost, an economical yield of sardine was discussed.
Yasunobu Matsuura
doaj   +1 more source

Larval condition and growth of Sardinella brasiliensis (Steindachner, 1879): preliminary results from laboratory studies

open access: yesScientia Marina, 2003
Brazilian sardine, the most important resource along the southeastern Brazilian coast, presented great variations and declines in its stocks. The main factors contributing to this are: oceanographic structure changes; recruitment failures; excessive ...
Carmen Lúcia del Bianco Rossi-Wongtschow   +3 more
doaj   +1 more source

Contribution of the nursery areas to the major fishing grounds of the Brazilian sardine (Sardinella brasiliensis) in Southeastern Brazilian Bight inferred from otolith fingerprints

open access: yesFisheries Research, 2023
This study was partially supported by the Brazilian Biodiversity Fund (FUNBIO) and the Strategic Funding UID/Multi/04423/2019 through national funds provided by FCT and European Regional Development Fund (ERDF), in the framework of the program PT2020.
Schroeder, R.   +9 more
openaire   +2 more sources

Determination of Natural Radionuclides (Ra-226, Po-210, Ra-228 and K-40) and Cs-137 in Fish Consumed in the City of São Paulo

open access: yesBrazilian Journal of Radiation Sciences, 2022
The aim of the study was to determine the activity concentration of the natural radionuclides (226Ra, 210Po, 228Ra and 40K) and artificial radionuclide 137Cs in the muscle of the marine fish species most consumed in the city of São Paulo and to evaluate ...
Andressa Nery   +3 more
doaj   +1 more source

Measurements of the branchial sieve of sardine (Sardinops sagax ocellatus) from the west and south coasts of southern Africa [PDF]

open access: yes, 2010
Includes abstract.Includes bibliographical references (p. 40-46).Branchial sieves of southern African sardine (Sardinops sagax ocellatus) were collected from three geographical regions along the southern African coast: Namibia, the south coast and the ...
Idris, Izwandy
core   +1 more source

Modelling dominance shifts of anchovy and sardine with a frame-based approach : sensitivity to the underlying sardine population dynamics [PDF]

open access: yes, 2012
Includes bibliographical references.It has been shown that sardine and anchovy populations in the southern Benguela have alternated dominance during the past 50 years, and a frame based model that explores the usefulness of frames within a marine ...
Botha, Jakobus Stephanus
core   +1 more source

Sharp decline of Oil sardine in Kerala, says CMFRI The Print dated 5th July 2022 [PDF]

open access: yes, 2022
Catch of oil sardine, a tasty and favorite variety of marine fish integral to Kerala cuisine, has drastically decreased to a meager 3,297 tonnes in the southern state last year, according to the Central Marine Fisheries Research Institute (CMFRI ...
CMFRI, Library
core   +1 more source

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