Determining spatial use of the world's second largest humpback dolphin population: Implications for place‐based conservation and management

2019 ◽  
Vol 30 (2) ◽  
pp. 364-374
Author(s):  
Mingming Liu ◽  
Lars Bejder ◽  
Mingli Lin ◽  
Peijun Zhang ◽  
Lijun Dong ◽  
...  
Keyword(s):  
Dolphin Population ◽  
Spatial Use ◽  
Conservation And Management

scholarly journals Population characteristics, space use and habitat associations of the seahorse Hippocampus reidi (Teleostei: Syngnathidae)

2007 ◽  
Vol 5 (3) ◽  
pp. 405-414 ◽  
Author(s):  
Ierecê Lucena Rosa ◽  
Tacyana P. R. Oliveira ◽  
André L. C. Castro ◽  
Luiz E. de Souza Moraes ◽  
Josias H. A. Xavier ◽  
...  
Keyword(s):  
Habitat Structure ◽  
Habitat Associations ◽  
Population Characteristics ◽  
Brazilian Coast ◽  
Life Stages ◽  
Unequal Distribution ◽  
Ecological Information ◽  
Spatial Use ◽  
Conservation And Management

This paper provides a case study of a threatened seahorse species, Hippocampus reidi, highlighting the importance of using ecological information to assist conservation and management initiatives. Underwater visual sighting data (50 x 2m transect) gathered along the NE, SE and S portions of the Brazilian coast revealed an unequal distribution across localities, perhaps related to harvesting pressure, and a mean density of 0.026 ind.m-2. Our findings suggest some restricted spatial use by H. reidi, which was consistent with its estimated home range, and with re-sighting of specimens. Reproduction was recorded year-round, however productive peaks may exist. Components of habitat structure mostly used as anchoring points were mangrove plants, macroalgae, cnidarians, seagrass, sponges, and bryozoans. Conservation recommendations include: further characterization and mapping of habitats; assessment of availability and condition of microhabitats in selected areas, and studies on dispersal routes during initial life stages.

scholarly journals Birds foraging for fruits and insects in shrubby restinga vegetation, southeastern Brazil

2008 ◽  
Vol 8 (4) ◽  
pp. 21-31 ◽  
Author(s):  
Verônica Souza da Mota Gomes ◽  
Bette A. Loiselle ◽  
Maria Alice S. Alves
Keyword(s):  
Feeding Behavior ◽  
National Park ◽  
Ground Level ◽  
Abundant Species ◽  
Southeastern Brazil ◽  
Vegetation Types ◽  
Insectivorous Birds ◽  
Frugivorous Birds ◽  
Spatial Use ◽  
Conservation And Management

Understanding how birds use vegetation to obtain food resources has implications for habitat conservation and management. Restinga is a poorly known and threatened tropical habitat, associated to the Atlantic forest, that could benefit from this kind of information to know which plants can be used and dispersed by birds that can help on the maintenance of this habitat. Frugivorous and insectivorous birds are important components of tropical ecosystems, such as restinga. To provide more information regarding the ecology of restinga, we studied the feeding behavior and spatial use of this vegetation by birds at Restinga de Jurubatiba National Park, southeastern Brazil. We found that feeding behavior was similar to that recorded for the same species in other vegetation types. In addition, spatial use of the restinga vegetation by the most abundant species did not overlap greatly, except for two insectivorous species that used different foraging maneuvers and two frugivorous birds that foraged in flocks. The two most abundant species were generalists in their diet and were capable of feeding at the ground level on sand substrate.

Investigation Plan to strengthen the Conservation and Management of Estuary Ecosystems

2020 ◽  
Vol 32 (4) ◽  
pp. 317-334
Author(s):  
Jeong-Cheol Lim ◽  
Kyung-Hwan Ahn ◽  
Byeong-Ki Choi ◽  
Gyeong-Yeon Lee
Keyword(s):  
Conservation And Management

Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative

2007 ◽  
Author(s):  
Janet M. Ruth ◽  
Albert Manville ◽  
Ron Larkin ◽  
Wylie C. Barrow ◽  
Lori Johnson-Randall ◽  
...  
Keyword(s):  
Migratory Bird ◽  
Bird Conservation ◽  
Conservation And Management

PERÍODO DE DESOVA E SUCESSO REPRODUTIVO DO TRACAJÁ Podocnemis unifilis TROSCHEL 1848 (TESTUDINES: PODOCNEMIDIDAE) NA VÁRZEA DA RDSM – MÉDIO SOLIMÕES, BRASIL

2008 ◽  
Vol 2 (1) ◽  
pp. 63-75
Author(s):  
Augusto Fachín Terán ◽  
Eduardo Matheus Von Mülhen
Keyword(s):  
Hatching Success ◽  
Management Program ◽  
Nesting Biology ◽  
Sand Beach ◽  
Podocnemis Unifilis ◽  
Turtle Population ◽  
Nesting Beaches ◽  
Conservation And Management ◽  
Tegu Lizard ◽  
Solimões River

In this study the nesting biology of Podocnem is unifilis was investigated from July to November 1998 at the Mamirauá Sustainable Development Reserve, located in the Solimões river, near Tefé, Amazonas, Brazil. Podocnemis unifilis nested in August and September, with the hatching event occurring in October and November. Nests were excavated in clay soils (67.5%), sand (25%), and leaf litter (7.5%). Hatching success was highest in the sand beach nests and lowest in the clay banks nests. Humans and the tegu lizard (Tupinambis) were the main egg predators. This turtle population can recover only by the protection of nesting beaches, educational programs for the in habitants of the Reserve, participation of the community in the conservation and management program , and permanent guarding of the nesting beaches by Instituto Brasileiro do Meio Ambiente e Dos Recursos Naturais Renováveis-IBAMA authorities.

Variability of Hormonal Stress Markers Collected from a Managed Dolphin Population

2011 ◽  
Author(s):  
Dorian S. Houser ◽  
Samuel Wasser ◽  
John F. Cockrem ◽  
Nick Kellar ◽  
Tracy Romano
Keyword(s):  
Stress Markers ◽  
Dolphin Population

Variability of Hormonal Stress Markers Collected from a Managed Dolphin Population

2013 ◽  
Author(s):  
Dorian S. Houser ◽  
Samuel Wasser ◽  
John F. Cockrem ◽  
Nick Kellar ◽  
Tracy Romano
Keyword(s):  
Stress Markers ◽  
Dolphin Population
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