Störarten in der Donau.

Auenmagazin 20: 42-45.

Zusammenfassung:

Störe sind ein wesentliches Faunenelement der Donau und stellten in der Vergangenheit durch ihre Migration eine Verbindung zwischen dem alpinen Donauraum und dem Schwarzen Meer her. Heute sind zwei von sechs Donaustören bereits ausgestorben und die verbliebenen Arten sind durch Wilderei, Beifang, Migrationsbarrieren und Habitatverlust vom Aussterben bedroht. Eine Vielzahl von Projekten forciert Bemühungen zum Schutz und zur Wiederansiedelung, welche jedoch nur koordiniert und in internationaler Kooperation Aussicht auf Erfolg haben.

Volltext (PDF)

neuburg-biblio

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Conservation Status of the “Piracanjuba” Brycon orbignyanus (Valenciennes, 1850) (Characiformes, Bryconidae): Basis for Management Programs.

Revista Biodiversidade Brasileira – BioBrasil, 7(1): 18-33,

Volltext: https://revistaeletronica.icmbio.gov.br/BioBR/article/download/612/518

Abstract:

The excessive exploitation of freshwater resources has been caused by many impacts on natural populations, especially on fish. Different factors related to pollution, overfishing, introduction of exotic species, construction of dams, and destruction of riparian vegetation can cause changes on the current populations and interfere with their equilibrium. In this context, Brycon orbignyanus, popularly known as “piracanjuba”, is an endangered fish species affected by overfishing and environmental degradation. The quality of the meat and its aggressive behavior in the practice of sport and professional fishing, occurring concomitantly to continuous changes in the habitat, has resulted in the fast depletion of natural stocks and resulted in its addition to the list of endangered Brazilian fish species. The species has its distribution along the La Plata River basin, which has in its upper parts highly impacted by demographic occupation, dam constructions, and agricultural farm activities in marginal areas. Habitat changes lead the wild groups of this species to shift to less affected regions, being presently restricted to a few far rivers and small tributaries that remain in preserved environmental conditions. In order to obtain a better view of the real situation of B. orbignyanus populations, the aim of this work is the development of effective management programs for the conservation of this species. The article brings together information available in the literature and provides biological and population information about its current geographic distribution, the main threats to the equilibrium in the changing environments of occurrence, the genetic characteristics of populations, and the prospects for use in conservation programs.

oliveira-biblio

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Samstag, 19 März 2022 14:56

LOPERA-BARRERO, N. M. (2009)

Conservation of Brycon orbignyanus natural populations and stocks for their reproductive, genetic, environmental sustainability: A model for species threatened with extinction.

Cien. Inv. Agr. 36(2):191-208. http://dx.doi.org/10.4067/S0718-16202009000200004

Abstract:

Several ecological and climatic factors, especially those related to human activities, have been contributing to the disappearance of natural populations of piracanjuba (Brycon orbignyanus). Due to the importance of these fish to the ecosystems in which they are located and their qualities of fast growth and ability to adapt to controlled environments, producers have expressed increased interest in recent years in using this species, with particular aims of increasing production, and participation in conservation programs. In this study, strategies for the sustainable management of B. orbignyanus are idealized and discussed, with the goals of perfecting the reproductive, genetic, environmental and sanitary management of this species and suggestions for improving monitoring stocks maintained in captivity and natural populations. These strategies can be used as models for other migratory species threatened with extinction.

loper-biblio; lopera-barrero-biblio

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Population genetics and abundance of the Endangered grey-headed lemur Eulemur cinereiceps in south-east Madagascar: assessing risks for fragmented and continuous populations.

ORYX 46(2): 298–307. doi:10.1017/S003060531100015

Abstract:

Knowledge of both population size and genetic diversity is critical for assessing extinction risk but few studies include concurrent estimates of these two components of population biology. We conducted an investigation of population density and size, and genetic variation and past demographic events, of the Endangered grey-headed lemur Eulemur cinereiceps in south-east Madagascar. We estimated lemur density using line-transect surveys and used satellite imagery to calculate forest fragment area in three localities. We collected tissue samples from 53 individuals and used 26 polymorphic microsatellite loci to obtain measures of population structure (divergence and diversity) across these localities. We tested the probability of past bottleneck events using three models. Contrary to expectation, there were no significant differences in population density across localities. Genetic diversity decreased, but not significantly, with decreasing habitat area and population size. We found a higher likelihood of past bottleneck events in the fragmented coastal populations. The low population size and prior decline in diversity in coastal patches are consistent with their isolation, anthropogenic disturbance, and exposure to cyclone activity. The similarities in the estimates of density between continuous and fragmented sites may indicate recent population growth in the fragments but these populations nevertheless remain at risk from reduced levels of genetic variation. These patterns should be confirmed with more extensive sampling across the limited range of E. cinereiceps.

brennemann-biblio

Freigegeben in B
Samstag, 29 Januar 2022 09:42

LANUV (2016)

Conservation and restoration of the Allis shad in the Gironde and Rhine watersheds.

LIFE Project Number LIFE09 NAT/DE/000008, Final Report covering the project activities from 01/01/2011 to 31/12/2015.
96 Seiten

Auszug:

5.2.1.7. Action D.7 Aquarium exhibition in La Rochelle Aquarium, France and the Aquazoo-Löbbecke Museum, Germany

The allis shad exposition in the Aquarium La Rochelle was launched in 2011. A loss of the old adults exposed there in 2013 was compensated by taking three year old specimens from the ex situ stock in the Aquarium la Rochelle that were exposed in a big Aquarium together with other Clupeid fishes in an own thematic section dealing with migratory fish. A new information panel was installed on this occasion which gives reference to the Life+ project. Many hundred thousand visitors have seen the allis shad exposition in La Rochelle and are well informed about the conservation needs for allis shad and the Life+ projects objectives to ensure that. It is intended to continue the exposition in the After-LIFE-time and the natural death of exposed fish, respectively, unless juveniles can be obtained from the hatchery on Bruch. The Aquarium La Rochelle will together with other branches of the Life+ project also contribute to the World Fish Migration Day in 2016.

A second allis shad exhibition in the Aquazoo-Löbbecke Museum in Düsseldorf was officially inaugurated in May 2013. A press conference was held on that occasion and yielded regional TV-reports and articles in newspapers and online media. The Aquazoo offered one of its most exposed Aquariums with a volume of 10 m3 for the exhibition in which 33 one year old allis shad from the Aßlar ex situ facility together with three sturgeons were presented. As in the Aquarium La Rochelle panels informed about the increasing endangerment of the allis shad, its former relevance along the Rhine and the background and the aims of the Life+ project. Unfortunately the Aquazoo was closed in November 2013 for structural restoration and renovation works (which are still not finalized) and the Aquazoo was closed for the public. As all other exposed animals also the allis shad exposition must be reversed. The shads and the sturgeons were brought back to the Aßlar facility in late November. Before that 233,000 visitors have seen the exhibition. Some of them and interested people from all over Europe visited the Aquazoo only in order to see and to take photos of the allis shad.$

lanuv-biblio

Freigegeben in L
Samstag, 22 Januar 2022 21:52

DOLLINGER, P. (2021)

Rückkehr in die Alpen - Wie Alpensteinbock, Bartgeier und Waldrapp wiederangesiedelt wurden.

Artenrettung 2021 (1): 52-70

Einleitung:

Tierrechtler und andere Zoogegner, welche die Artenschutzleistung der Zoos kleinreden wollen, verweisen immer wieder darauf, dass die Zoos nur «Anteil an der Wiederansiedlung von etwa einem Dutzend zuvor in der Wildnis ausgestorbener Arten» gehabt hätten und «nur einmal pro Jahrzehnt irgendwo auf Erden eine ausgestorbene Art wieder angesiedelt» werde 24. Dies ist falsch, denn von den rund 60, gegenwärtig oder früher in der Roten Liste der Weltnaturschutzorganisation IUCN der Kategorie «Extinct in the Wild» zugeordneten Tierarten konnten 30 wiederangesiedelt werden. Die meisten davon im Verlauf der letzten 30 Jahre durch oder unter Mitwirkung von Zoos. Wenn man dann noch jene Tierarten berücksichtigt, die regional ausgestorben waren und mit Hilfe der Zoos in Teilen ihres ursprünglichen Verbreitungsgebiets wiederangesiedelt werden konnten, sprechen wir von mehreren hundert Arten, Stützungen lokal bedrängter Bestände nicht mitgezählt. Von diesen regional ausgestorbenen Arten wären mit Sicherheit einige vollständig ausgestorben, hätte man nicht rechtzeitig ex situ-Schutzmaßnahmen zur Anwendung gebracht.

In diesem Artikel sollen die Bemühungen zur Wiederansiedlung von drei Arten im Alpenraum vorgestellt werden, nämlich die erfolgreichen Wiedereinbürgerungen von Steinbock und Bartgeier sowie die noch laufenden Versuche, den Waldrapp wieder heimisch zu machen.

dollinger-biblio

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Donnerstag, 30 Dezember 2021 13:46

SCHREIBER, A., MONTADERT, M. (Hrsg., 2019).

Westliches Haselhuhn. Biologie, Status und Perspektiven einer Erhaltungszucht.

Neustadt (Weinstraße), POLLICHIA. ISBN: 978-3-925754-64-7.

Volltext: https://www.zobodat.at/pdf/Mitt-Pollichia_SB_2019_0001-0232.pdf

Einleitung zu den Schlussfolgerungen:

Die Abschlussdiskussion des Symposiums am 3.12.2017 behandelte vier Themen zum Problemkreis „Erhaltungszucht als Baustein eines Artenhilfsprogramms für das Westliche Haselhuhn“. Vor deren nachstehender Zusammenfassung sei betont, dass weitere Aspekte des Schutzes des Westlichen Haselhuhns nur am Rande Gegenstand dieser Tagung oder der Diskussion waren, etwa Schutzmaßnahmen im Freiland oder die Frage nach der notwendigen Validierung gemeldeter Nachweise dieser schwierig zu kartierenden Art. Dennoch sind natürlich verlässliche und stimmige Nachweisdaten relevant, um Gründerindividuen (oder Gelege) zum Einrichten eines Zuchtprogramms zu finden.

schreiber-biblio

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Samstag, 18 Dezember 2021 16:40

BRAUN, T., & DIERKES, P. (2017)

Connecting students to nature – how intensity of nature experience and student age influence the success of outdoor education programs.

Environmental Education Research 23(7): 937-949. https://doi.org/10.1080/13504622.2016.121486

Artikel auf Deutsch dazu: https://www.opel-zoo.de/files_db/1587543644_2666__8.pdf (Seiten 6/7).

Abstract:

Nature connectedness counts as a crucial predictor of pro-environmental behavior. For counteracting today's environmental issues a successful re-connection of individuals to nature is necessary. Besides the promotion of knowledge transfer the aim of the educational program presented in this study is to connect students to their environment. This research explores the impact of an outdoor environmental education program on primary and secondary school students' nature connectedness with regard to the extent of their nature experience and participant age. The intervention was implemented in two durations: one-day and five-days. Participants were divided into four subsamples from seven up to 18 years of age. Findings suggest that both intervention types evoke immediate shifts towards a stronger nature connectedness among students (p < 0.001). Notably, the five-day outdoor education interventions were significantly more effective in sustainably promoting nature connectedness compared to one-day field trips (p < 0.001). Seven to nine year old students performed the strongest shifts towards nature. The value of short-term and residential outdoor environmental education interventions is discussed.

braun-biblio

Freigegeben in B

Identifying factors influencing attitudes towards species conservation – a transnational study in the context of zoos.

Environmental Education Research 27(10): 1421-1439. https://doi.org/10.1080/13504622.2021.1927993

Abstract:

In the past decades, zoos have increasingly developed into conservation and education centers and today make an important contribution to environmental education. In this context, this study investigated which factors influence attitudes towards species conservation. The variables examined were gender, age, the number of visits to zoos in the last 12 months, perception of zoos, interest in animals and the country where the survey was conducted. A total of 3347 participants in seven different countries were surveyed. In the hierarchical multiple regression, it was found that all the variables examined were significant influencing factors with exception of gender. A mediator analysis provided evidence that the number of visits to zoos, in addition to the direct effect on attitudes towards species conservation, also has a relevant indirect effect with interest in animals as mediators. Significant differences in attitudes towards species conservation were found between some of the countries studied, but only with a small effect sizes.

kleespies-biblio

KLEESPIES

Faktoren, welche das Interesse an Tieren und die Haltung gegenüber dem Artenschutz beeinflussen

Freigegeben in K

Giant Panda National Park, a step towards streamlining protected areas and cohesive conservation management in China.

Global Ecology and Conservation 22, June 2020, e00947

Abstract:

The Chinese government recently finalized a plan to establish a Giant Panda National Park in 2020, one of the first national parks in the country. The plan will extend protection status to a significant amount of areas that were previously unprotected; it will also bring many of the existing giant panda protected areas under one authority in order to improve effectiveness and reduce inconsistencies in management. We provide an overview of the history and status of giant panda conservation and the rationale for creating the park. We also give first-hand information on details of the park design, including its general objectives, geographic range, zone divisions, management and funding structure, as well as analysis of the challenges and opportunities ahead. As a new conservation model for China, the Giant Panda National Park has the ambitious goal of standardizing conservation across a large region. It is a major step toward significantly expanding the amount of area protected and establishing a cohesive conservation network for a sustainable giant panda population in the wild.

huang-biblio

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