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Under Pressure: Cetaceans And Fisheries Co-Occurrence Off The Coasts Of Ghana And Côte D’Ivoire (Gulf Of Guinea), Marijke N. De Boer, James T. Saulino, Koen Van Waerebeek, Geert Aarts Sep 2016

Under Pressure: Cetaceans And Fisheries Co-Occurrence Off The Coasts Of Ghana And Côte D’Ivoire (Gulf Of Guinea), Marijke N. De Boer, James T. Saulino, Koen Van Waerebeek, Geert Aarts

Anthropogenics and Population Decline Collection

Within the Gulf of Guinea high levels of fisheries-related cetacean mortality (bycatch and direct-capture) has been documented. For locally rare species such removals could potentially lead to significant population level effects. However, information on the cetacean abundance and distribution is scarce. Similarly, it remains largely unreported where fishing fleets operate offshore. A cetacean survey took place during geophysical surveys (2013–2014) along the coasts of Ghana and Côte d’Ivoire. This provided a unique opportunity to study both offshore cetacean and fishing communities. Due to large group-sizes, melon-headed whales were the most abundant (0.34 animals km−1) followed by ...


Recruitment Of Larix Sibirica Ledeb. In Closed Forest Stands, On Clear-Felling Sites And At Fire-Sites In The Forests Of Mongolia, Vasiliy T. Yarmishko, Nikolay N. Slemnev Jan 2012

Recruitment Of Larix Sibirica Ledeb. In Closed Forest Stands, On Clear-Felling Sites And At Fire-Sites In The Forests Of Mongolia, Vasiliy T. Yarmishko, Nikolay N. Slemnev

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The paper deals with recruitment patterns in larch forests of Mongolia following anthropogenic impacts (felling, fires), and describes successional trends in highland forest communities. It is established that mass seed recruitment of Larix sibirica Ledeb. took place during anomalous combinations of hydrothermal conditions supposedly occurring at periods of about 100 years. During the last decades, frequent fires of various intensities put serious constraints on reforestation of the larch, and induced successional trends in disturbed forests.


Diversity And Distribution Of Mongolian Fish: Recent State, Trends And Studies, Yuri Dgebuadze, Bud Mendsaikhan, Ayurin Dulmaa Jan 2012

Diversity And Distribution Of Mongolian Fish: Recent State, Trends And Studies, Yuri Dgebuadze, Bud Mendsaikhan, Ayurin Dulmaa

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The studies in recent years (2000-2011) have allowed to make more precise the list and ranges of Mongolian fish. This is connected with new findings as well as the continuing process of invasion of alien species. Climate change and increase of human impact transformed ranges and local distribution of fish during last 30 years. Bias on ratio of ecological guilds, number of pathological findings are increasing, and declining of local diversity, rate of growth and fecundity of many species of fish are observed. In the course of long-term observation was confirmed periodically drying of waters of the Central Asian Lake ...