Results 71 to 80 of about 3,851 (176)

Abundance and Seasonal Dynamics of Guiana Dolphins (Sotalia guianensis) in Southern Brazilian Estuarine and Adjacent Coastal Waters

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT Estimating population parameters is crucial for understanding species dynamics and assessing anthropogenic impacts, thereby supporting conservation efforts. We evaluate key population parameters—group structure, abundance and capture–recapture probabilities—of the Guiana dolphin in the Paranaguá Estuarine Complex and adjacent coastal waters ...
Stephane P. G. de Moura   +3 more
wiley   +1 more source

Lei do SNUC: Sistema Nacional De Unidades de Conservação da Natureza [PDF]

open access: yes, 2016
Law 9985/2000, the Snuc - National System of Nature Conservation Units, is the focus of this case study. It described the history of protected areas, territorialisation of Conservation Units, and political influences on the declaration of Snuc Act ...
Lucena, Perilo Holanda de.
core  

The Role of Elevation, Connectivity and Land Cover on Migratory and Non‐Migratory Fish Communities in an Amazonian Riverine System

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT Dams and deforestation are key drivers of freshwater biodiversity loss in the Amazon, as they alter river connectivity, water quality and habitat structure. This study investigates how connectivity (Reach Connectivity Index—RCI), elevation and natural land cover influence the diversity and composition of fish assemblages in a highly fragmented
Izaias Médice Fernandes   +6 more
wiley   +1 more source

Avaliação do risco de extinção do gato-maracajá Leopardus wiedii (Schinz, 1821) no Brasil

open access: yesBiodiversidade Brasileira, 2013
Leopardus wiedii possui uma distribuição ampla no Brasil, com exceção do Ceará e sul do Rio Grande do Sul. Apesar disso, o tamanho populacional efetivo calculado é de cerca de 4.700 indivíduos no território brasileiro. Estima-se que nos próximos 15 anos (
Marcos Adriano Tortato   +3 more
doaj   +3 more sources

O Parque Nacional do Araguaia: dilemas entre o desenvolvimento regional e a conservação da natureza

open access: yes, 2020
This article deals with the motivations and initiatives around the creation of the Araguaia National Park (PNA), with emphasis on the period between 1940 and 1960.
de Andrade Franco, José Luiz   +1 more
core   +1 more source

Políticas ambientais para conservação da natureza nos parques estaduais dos Campos Gerais do Paraná [PDF]

open access: yes, 2013
Resumo: O presente resumo versa sobre as políticas ambientais aplicadas a conservação da natureza nos cinco parques estaduais situados nos Campos Gerais do Paraná.
Meneguzzo, Isonel Sandino
core  

Avaliação do risco de extinção do gato-do-mato Leopardus tigrinus no Brasil

open access: yesBiodiversidade Brasileira, 2013
Leopardus tigrinus tem ocorrência ampla no Brasil, embora seja conhecido de poucos registros no bioma Amazônico. A população desta espécie foi calculada utilizando-se uma área de remanescentes de 1.834.967 km2. A população efetiva estimada, de acordo com
Tadeu Gomes de Oliveira   +4 more
doaj   +3 more sources

Do emotions influence the motivations and preferences of keepers of stingless bees?

open access: yesJournal of Ethnobiology and Ethnomedicine, 2018
Background According to the biophilia hypothesis, an emotional affiliation with nature has been inherited during human biocultural evolution. Research on beekeeping can contribute to the scientific understanding of the influence of emotions in the human ...
Roberta Monique Amâncio Carvalho   +3 more
doaj   +1 more source

Manifestações pela conservação da natureza no Brasil (1784-1889)

open access: yes, 2005
Este trabalho tem como objetivo apontar e analisar as manifestações pela conservação da natureza no Brasil entre 1784 e 1889, período que engloba os últimos anos do Brasil-Colônia e o fim do II Império.
Ferreira dos Santos, Margaret
core   +1 more source

Influence of habitat management on the abundance and diet of wild rabbit (Oryctolagus cunniculus algirus) populations in Mediterranean ecosystems.

open access: yes, 2009
During the last decades wild rabbit (Oryctolagus cuniculus) populations have been progressively declining in the Iberian Peninsula as a result of several factors, namely habitat deterioration. Hence, habitat management has become one of the most commonly
Ferreira, Catarina, Alves, Paulo C.
core   +1 more source

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