TY  - JOUR
A1  - Zielhofer, Christoph
A1  - Schmidt, Johannes
A1  - Reiche, Niklas
A1  - Tautenhahn, Marie
A1  - Ballasus, Helen
A1  - Burkart, Michael
A1  - Linstädter, Anja
A1  - Dietze, Elisabeth
A1  - Kaiser, Knut
A1  - Mehler, Natascha
T1  - The lower Havel River Region (Brandenburg, Germany)
BT  - a 230-Year-Long historical map record indicates a decrease in surface water areas and groundwater levels
JF  - Water
N2  - Instrumental data show that the groundwater and lake levels in Northeast Germany have decreased over the past decades, and this process has accelerated over the past few years. In addition to global warming, the direct influence of humans on the local water balance is suspected to be the cause. Since the instrumental data usually go back only a few decades, little is known about the multidecadal to centennial-scale trend, which also takes long-term climate variation and the long-term influence by humans on the water balance into account. This study aims to quantitatively reconstruct the surface water areas in the Lower Havel Inner Delta and of adjacent Lake Gulpe in Brandenburg. The analysis includes the calculation of surface water areas from historical and modern maps from 1797 to 2020. The major finding is that surface water areas have decreased by approximately 30% since the pre-industrial period, with the decline being continuous. Our data show that the comprehensive measures in Lower Havel hydro-engineering correspond with groundwater lowering that started before recent global warming. Further, large-scale melioration measures with increasing water demands in the upstream wetlands beginning from the 1960s to the 1980s may have amplified the decline in downstream surface water areas.
KW  - long-term hydrological changes
KW  - historical maps
KW  - review of written
KW  - sources
KW  - preindustrial to industrial period
KW  - hydro-engineering history;
KW  - effects of global warming
KW  - drying trend
KW  - wetlands
KW  - drainage works to
KW  - create cropland
KW  - Lower Havel River Region
KW  - Brandenburg
KW  - Germany
Y1  - 2022
U6  - https://doi.org/10.3390/w14030480
SN  - 2073-4441
VL  - 14
IS  - 3
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - van Rees, Charles B.
A1  - Waylen, Kerry A.
A1  - Schmidt-Kloiber, Astrid
A1  - Thackeray, Stephen J.
A1  - Kalinkat, Gregor
A1  - Martens, Koen
A1  - Domisch, Sami
A1  - Lillebo, Ana
A1  - Hermoso, Virgilio
A1  - Grossart, Hans-Peter
A1  - Schinegger, Rafaela
A1  - Decleer, Kris
A1  - Adriaens, Tim
A1  - Denys, Luc
A1  - Jaric, Ivan
A1  - Janse, Jan H.
A1  - Monaghan, Michael T.
A1  - De Wever, Aaike
A1  - Geijzendorffer, Ilse
A1  - Adamescu, Mihai C.
A1  - Jähnig, Sonja C.
T1  - Safeguarding freshwater life beyond 2020
BT  - recommendations for the new global biodiversity framework from the European experience
JF  - Conservation letters
N2  - Plans are currently being drafted for the next decade of action on biodiversity-both the post-2020 Global Biodiversity Framework of the Convention on Biological Diversity (CBD) and Biodiversity Strategy of the European Union (EU). Freshwater biodiversity is disproportionately threatened and underprioritized relative to the marine and terrestrial biota, despite supporting a richness of species and ecosystems with their own intrinsic value and providing multiple essential ecosystem services. Future policies and strategies must have a greater focus on the unique ecology of freshwater life and its multiple threats, and now is a critical time to reflect on how this may be achieved. We identify priority topics including environmental flows, water quality, invasive species, integrated water resources management, strategic conservation planning, and emerging technologies for freshwater ecosystem monitoring. We synthesize these topics with decades of first-hand experience and recent literature into 14 special recommendations for global freshwater biodiversity conservation based on the successes and setbacks of European policy, management, and research. Applying and following these recommendations will inform and enhance the ability of global and European post-2020 biodiversity agreements to halt and reverse the rapid global decline of freshwater biodiversity.
KW  - climate change
KW  - conservation
KW  - ecosystem services
KW  - rivers
KW  - sustainable
KW  - development goals
KW  - water resources
KW  - wetlands
Y1  - 2020
U6  - https://doi.org/10.1111/conl.12771
SN  - 1755-263X
VL  - 14
IS  - 1
PB  - Wiley
CY  - Hoboken
ER  -