TY  - JOUR
A1  - Rinawati, Fitria
A1  - Stein, Katharina
A1  - Lindner, André
T1  - Climate change impacts on biodiversity-the setting of a lingering global crisis
JF  - Diversity
N2  - Climate change has created potential major threats to global biodiversity. The multiple components of climate change are projected to affect all pillars of biodiversity, from genes over species to biome level. Of particular concerns are "tipping points" where the exceedance of ecosystem thresholds will possibly lead to irreversible shifts of ecosystems and their functioning. As biodiversity underlies all goods and services provided by ecosystems that are crucial for human survival and wellbeing, this paper presents potential effects of climate change on biodiversity, its plausible impacts on human society as well as the setting in addressing a global crisis. Species affected by climate change may respond in three ways: change, move or die. Local species extinctions or a rapidly affected ecosystem as a whole respectively might move toward its particular "tipping point", thereby probably depriving its services to human society and ending up in a global crisis. Urgent and appropriate actions within various scenarios of climate change impacts on biodiversity, especially in tropical regions, are needed to be considered. Foremost a multisectoral approach on biodiversity issues with broader policies, stringent strategies and programs at international, national and local levels is essential to meet the challenges of climate change impacts on biodiversity.
KW  - biodiversity
KW  - climate change
KW  - ecosystem function
KW  - ecosystem service
KW  - tropical forest
Y1  - 2013
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-131866
VL  - 5
IS  - 1
ER  - 
TY  - JOUR
A1  - Stein, Katharina
A1  - Coulibaly, Drissa
A1  - Stenchly, Kathrin
A1  - Goetze, Dethardt
A1  - Porembski, Stefan
A1  - Lindner, André
A1  - Konaté, Souleymane
A1  - Linsenmair, Eduard K.
T1  - Bee pollination increases yield quantity and quality of cash crops in Burkina Faso, West Africa
JF  - Scientific Reports
N2  - Mutualistic biotic interactions as among flowering plants and their animal pollinators are a key component of biodiversity. Pollination, especially by insects, is a key element in ecosystem functioning, and hence constitutes an ecosystem service of global importance. Not only sexual reproduction of plants is ensured, but also yields are stabilized and genetic variability of crops is maintained, counteracting inbreeding depression and facilitating system resilience. While experiencing rapid environmental change, there is an increased demand for food and income security, especially in sub-Saharan communities, which are highly dependent on small scale agriculture. By combining exclusion experiments, pollinator surveys and field manipulations, this study for the first time quantifies the contribution of bee pollinators to smallholders’ production of the major cash crops, cotton and sesame, in Burkina Faso. Pollination by honeybees and wild bees significantly increased yield quantity and quality on average up to 62%, while exclusion of pollinators caused an average yield gap of 37% in cotton and 59% in sesame. Self-pollination revealed inbreeding depression effects on fruit set and low germination rates in the F1-generation. Our results highlight potential negative consequences of any pollinator decline, provoking risks to agriculture and compromising crop yields in sub-Saharan West Africa.
KW  - bees
KW  - pollination
KW  - Burkina Faso
KW  - cash crops
KW  - cotton
KW  - sesame
Y1  - 2017
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-169914
VL  - 7
IS  - 17691
ER  -