scholarly journals Fisheries bycatch reduction within the least-cost biodiversity mitigation hierarchy: Conservatory offsets with an application to sea turtles

2018 ◽  
Author(s):  
Dale Squires ◽  
Victor Restrepo ◽  
Serge Garcia ◽  
Peter Dutton
Keyword(s):  
Sea Turtles ◽  
Sea Turtle ◽  
Impact Mitigation ◽  
Bycatch Reduction ◽  
Conservation Programme ◽  
Mitigation Hierarchy ◽  
Turtle Conservation ◽  
Sea Turtle Conservation ◽  
Fisheries Bycatch

This paper considers fisheries bycatch reduction within the least-cost biodiversity impact mitigation hierarchy. It introduces conservatory offsets that are implemented earlier in the biodiversity impact mitigation hierarchy than conventional compensatory offsets used as instruments of last resort. The paper illustrates implementation in an on-going sea turtle conservation programme by the International Seafood Sustainability Foundation.

Estimating past and present sex ratios of sea turtles in Suriname

1996 ◽  
Vol 74 (2) ◽  
pp. 267-277 ◽  
Author(s):  
Matthew H. Godfrey ◽  
N. Mrosovsky ◽  
R. Barreto
Keyword(s):  
Sea Turtles ◽  
Sex Ratios ◽  
Negative Relationship ◽  
Chelonia Mydas ◽  
Sea Turtle ◽  
Dermochelys Coriacea ◽  
Green Turtles ◽  
Sand Temperature ◽  
Turtle Conservation ◽  
Sea Turtle Conservation

Leatherback (Dermochelys coriacea) and green (Chelonia mydas) sea turtles in Suriname lay eggs over several months of the year. During this nesting season, changes in rainfall produce changes in sand temperature, which in turn influence the sexual differentiation of incubating sea turtle embryos. The overall sex ratio of leatherback and green sea turtle hatchlings produced at Matapica beach in Suriname was investigated. Estimates of the sex ratios of these turtles in 1993 (green turtles 63.8% female, leatherbacks 69.4% female) were roughly 10% more female-biased than those from an earlier study in 1982. For both species, a significant negative relationship was found between monthly rainfall and monthly sex ratios. Using this relationship and data on rainfall in the past, it was possible to estimate overall sex ratios for an additional 12 years. These estimates varied considerably among different years, ranging from 20 to 90% female in the case of green turtles. Nevertheless, males tended to be produced primarily in April and May, while some females were produced in all months. Such seasonal patterns of production of turtles of different sexes have implications for sea turtle conservation programs that involve manipulating or harvesting eggs.

scholarly journals An Examination of an Opportunity for Collaboration Among Stakeholders to Promote Conservation in Sea Turtle Tourism in Gilli Trawangan, Indonesia

2021 ◽  
Author(s):  
Allison Anne McCabe
Keyword(s):  
Sea Turtles ◽  
Sustainable Tourism ◽  
Tourism Development ◽  
Sea Turtle ◽  
Small Island ◽  
Small Islands ◽  
Stakeholder Collaboration ◽  
Turtle Conservation ◽  
Sea Turtle Conservation ◽  
The Impact

All species of sea turtles are globally endangered, largely due to the impact of unsustainable tourism. Gili Trawangan, a small island, depends on marine tourism and has an abundant population of sea turtles. Stakeholder collaboration is often used to promote sustainable tourism development and sea turtle conservation. This study examined stakeholder collaboration to promote conservation in sea turtle tourism in small islands by exploring a case study in Gili Trawangan, Indonesia. The study was conducted in 2010. It applied qualitative research methods to expand the knowledge of collaboration in the development of sustainable tourism in small islands. Stakeholder analysis helped to reveal barriers to and influences on tourism development to help promote sea turtle conservation and protect the livelihoods of local communities. Key findings are that education, financial considerations, management structure, regulatory conflict, a disconnect to the island, and stakeholder conflict are factors that influenced stakeholder collaboration in Gili Trawangan.

scholarly journals Local community involvement in conservation—the use of mini-guides in a programme for sea turtles in Brazil

Oryx ◽  
1999 ◽  
Vol 33 (2) ◽  
pp. 127-131 ◽  
Author(s):  
Claudia F. Vieitas ◽  
Gustave G. Lopez ◽  
Maria A. Marcovaldi
Keyword(s):  
Community Involvement ◽  
Local Community ◽  
Sea Turtles ◽  
Sea Turtle ◽  
Economic Benefits ◽  
Environmental Conservation ◽  
Approval Ratings ◽  
Turtle Conservation ◽  
Sea Turtle Conservation ◽  
Alternative Sources

AbstractThe Brazilian Sea Turtle Conservation Programme (TAMAR) was established in 1980 to protect sea turtles in Brazil and to re-establish their natural life cycle, which had been disrupted by humans. The programme is based on grassroots involvement by the coastal communities, and provides jobs and generates alternative sources of income. Within this framework, the mini-guides programme was created. It consists of a summer training course in which local children between 8 and 13 years old learn basic information about marine ecosystems and sea turtles, strategies to promote their conservation, and skills to interact effectively with tourists. After the course, children are given onsite experience by working as interns at the TAMAR visitor centre at Praia do Forte, on schedules designed to avoid conflicts with their studies at school. The children work closely with tourists, informing them about sea turtles and TAMAR's work; they also help the biologists in field activities. In this way, they enhance their own awareness, and by extension their families' and the community's concern about environmental conservation. Their involvement provides them not only with valuable skills, but also an extra source of income, thereby providing economic benefits to their families. The success of this programme is indicated by the excellent approval ratings given by the tourists visiting the area.

scholarly journals An Examination of an Opportunity for Collaboration Among Stakeholders to Promote Conservation in Sea Turtle Tourism in Gilli Trawangan, Indonesia

2021 ◽  
Author(s):  
Allison Anne McCabe
Keyword(s):  
Sea Turtles ◽  
Sustainable Tourism ◽  
Tourism Development ◽  
Sea Turtle ◽  
Small Island ◽  
Small Islands ◽  
Stakeholder Collaboration ◽  
Turtle Conservation ◽  
Sea Turtle Conservation ◽  
The Impact

All species of sea turtles are globally endangered, largely due to the impact of unsustainable tourism. Gili Trawangan, a small island, depends on marine tourism and has an abundant population of sea turtles. Stakeholder collaboration is often used to promote sustainable tourism development and sea turtle conservation. This study examined stakeholder collaboration to promote conservation in sea turtle tourism in small islands by exploring a case study in Gili Trawangan, Indonesia. The study was conducted in 2010. It applied qualitative research methods to expand the knowledge of collaboration in the development of sustainable tourism in small islands. Stakeholder analysis helped to reveal barriers to and influences on tourism development to help promote sea turtle conservation and protect the livelihoods of local communities. Key findings are that education, financial considerations, management structure, regulatory conflict, a disconnect to the island, and stakeholder conflict are factors that influenced stakeholder collaboration in Gili Trawangan.

scholarly journals Sea Turtle Conservation: 10 Ways You Can Help

EDIS ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. 4
Author(s):  
Jessica E. Swindall ◽  
Holly K. Ober ◽  
Margaret M. Lamont ◽  
Raymond R. Carthy
Keyword(s):  
Sea Turtles ◽  
Sea Turtle ◽  
Wildlife Ecology ◽  
Fact Sheet ◽  
Turtle Conservation ◽  
Sea Turtle Conservation

All five species of sea turtles in Florida are in danger of extinction, largely as a result of people's actions. Fortunately, however, there are simple steps Florida?s residents and visitors can take to help these remarkable animals. This illustrated 4-page fact sheet written by Jessica E. Swindall, Holly K. Ober, Margaret M. Lamont, and Raymond R. Carthy and published by the UF/IFAS Department of Wildlife Ecology and Conservation provides 10 easy-to-follow suggestions for ways people can reduce harm to sea turtles. https://edis.ifas.ufl.edu/uw466

scholarly journals Effectiveness of Sea Turtle Conservation Management at the Turtle Conservation and Education Center of Serangan, Denpasar Bali

2021 ◽  
Vol 10 (1) ◽  
pp. 18
Author(s):  
Taurus Zeno Adi Eti Harnino ◽  
I Nyoman Yoga Parawangsa ◽  
Luthfiana Aprilianita Sari ◽  
Sulastri Arsad
Keyword(s):  
Sea Turtles ◽  
Marine Ecosystem ◽  
Sea Turtle ◽  
Sand Temperature ◽  
Observation Methods ◽  
Turtle Conservation ◽  
Sea Turtle Conservation ◽  
Nest Depth ◽  
Turtle Population ◽  
The Government

Turtles are one of the reptile animals that can migrate long distances along the Indian Ocean, Pacific Ocean and Southeast Asia. The purpose of turtle migration is to mate, find spawning locations and to find food. Sea turtles have an important role in maintaining the balance of the marine ecosystem. However, the high utilization of sea turtles by humans causes the turtle population to decline. One of the conservation sites that help the government program is in Serangan, Denpasar Bali, namely the TCEC (Turtle Conservation and Education Center), where there are several types of turtles such as the lekang turtle, hawksbill and green turtle. Data collection techniques in this study used observation methods including beach monitoring, relocation of turtle eggs to semi-natural hatchery hatching, hatchling and turtle nesting as well as measurement of turtle length and width carapase curve (CCL/CCW), sand temperature, nest depth, nest diameter, nest distance and nest calculation of the number of eggs to see the success of hatching. The results are turtle conservation activities, ranging from turtle maintenance, hatching of turtle eggs, relocation of eggs, and maintenance of hatchlings to release turtles. The effectiveness given by TCEC to manage and preserve the existence of sea turtles in Indonesia, especially in the Bali region is to provide awareness to the community by not consuming eggs and turtle meat.

scholarly journals Genomic evidence of recent hybridization between sea turtles at Abrolhos Archipelago and its association to low reproductive output

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Larissa Souza Arantes ◽  
Lucas Cabral Lage Ferreira ◽  
Maximilian Driller ◽  
Fernando Pedro Marinho Repinaldo Filho ◽  
Camila Junqueira Mazzoni ◽  
...  
Keyword(s):  
Reproductive Output ◽  
Sea Turtles ◽  
Sea Turtle ◽  
Northeastern Brazil ◽  
F1 Hybrids ◽  
Turtle Species ◽  
Turtle Conservation ◽  
Loggerhead Turtles ◽  
Need To Evaluate ◽  
Sea Turtle Conservation

Abstract Hybridization between sea turtle species occurs with particularly high frequency at two adjacent nesting areas in northeastern Brazil. To understand the outcomes of hybridization and their consequences for sea turtle conservation, we need to evaluate the extent of hybridization occurrence and possible deleterious effects in the hybrid progeny. Thus, we investigated the hypothesis of the existence of a new hybrid spot offshore of Brazil’s northeastern coast. The Abrolhos Archipelago is surrounded by the largest and richest coral reefs in the South Atlantic and is known to be a nesting site for loggerhead turtles (Carettacaretta). In this study, we performed a multidisciplinary investigation into levels of hybridization in sea turtles and their reproductive output in the Abrolhos beaches. Genetic data from mitochondrial DNA (mtDNA) and six autosomal markers showed that there are first-generation hybrid females nesting in Abrolhos, resulting from crossings between hawksbill males (Eretmochelysimbricata) and loggerhead females, and backcrossed hatchlings from both parental species. The type and extent of hybridization were characterized using genomic data obtained with the 3RAD method, which confirmed backcrossing between F1 hybrids and loggerhead turtles. The reproductive output data of Abrolhos nests suggests a disadvantage of hybrids when compared to loggerheads. For the first time, we have shown the association between hybridization and low reproductive success, which may represent a threat to sea turtle conservation.

scholarly journals Pemanfaatan dan Efektivitas Kegiatan Penangkaran Penyu di Bali bagi Konservasi Penyu

2017 ◽  
Vol 2 (1) ◽  
pp. 21
Author(s):  
Eterna Firliansyah ◽  
Mirza Dikari Kusrini ◽  
Arzyana Sunkar
Keyword(s):  
Captive Breeding ◽  
Sea Turtles ◽  
Sea Turtle ◽  
Religious Activities ◽  
Nesting Habitat ◽  
Conservation Program ◽  
Regular Monitoring ◽  
Turtle Conservation ◽  
Sea Turtle Conservation

Sea turtle has been widely consumed in Bali since the 1970s mostly for religious activities.  After many international critics, various stakeholders (governments, NGOs, environmentalists and Balinese people) developed the so-called “turtle conservation centre” as means to conserve sea turtles. The purpose of this study is to assess the effectiveness of those conservation efforts by evaluating the conservation activities of each conservation centres. We visited five sea turtle conservation centres in Bali; all were named as captive breeding centres or farm. The captive breeding centre is misleading as there is no activity related to captive breeding, mostly hatchery. Some of the eggs were not even originated from Bali, and the centres were sometimes used as the source for sea turtle for religious purposes. Based on the scoring, only one centre is active in terms of conservation. Turtle conservation program in Bali should increase their in situ program, i.e. mapping and protecting the nesting habitat and conducting regular monitoring of nesting turtle.

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