Mollusc biodiversity in late Holocene nearshore environments of the Caspian Sea: A baseline for the current biodiversity crisis

Published on Dec 1, 2019in Palaeogeography, Palaeoclimatology, Palaeoecology2.616
· DOI :10.1016/j.palaeo.2019.109364
Sabrina van de Velde2
Estimated H-index: 2
Frank P. Wesselingh26
Estimated H-index: 26
+ 5 AuthorsSalomon B. Kroonenberg25
Estimated H-index: 25
(TU Delft: Delft University of Technology)
Abstract The Caspian Sea is an evolutionary island whose rich and endemic fauna have evolved in partial isolation over the past two million years. Baseline studies of pre-20th Century communities are needed in order to assess the severity of the current Caspian biodiversity crisis, which mostly involves invasive species. An inventory of late Holocene shelly assemblages (c. 2000–2500 cal yr BP) from outcrops in and around Great Turali Lake (Dagestan, Russia) shows a diverse nearshore community consisting of 24 endemic Caspian species, two invasive species and two Caspian native species that lived in a shallow embayment with mesohaline salinities of circa 5–13 psu (parts per thousands). This pre-crisis Holocene Caspian mollusc community serves as a baseline against which modern mollusc diversity measurements can be evaluated. Examination of faunas from similar environments living today and in the past illustrates the dramatic changes in nearshore communities during the 20th Century. Our study identifies a habitat that may have served as a refuge, but that is currently under threat from invasive species. The severity of the Caspian biodiversity crisis is comparable with other well-known biodiversity crises in semi-isolated ecosystems such as the cichlid fish communities of Lake Victoria, Africa.
  • References (37)
  • Citations (0)
📖 Papers frequently viewed together
1 Citations
2 Citations
78% of Scinapse members use related papers. After signing in, all features are FREE.
1 CitationsSource
#1Arthur F. Sands (University of Giessen)H-Index: 2
#2Sergej Sereda (University of Giessen)H-Index: 4
Last. Christian Albrecht (University of Giessen)H-Index: 5
view all 7 authors...
AIM: Elevated biodiversity is the result of the cradle, museum or sink functions. The contributions of these three functions to species accumulation and their changes through time remain unknown for glacial refugia. Additionally, our understanding of the role these functions played during pre‐glacial periods is limited. We test for changes in contributions of functions through time leading to the current diversity patterns using a model refugium and taxon. LOCATION: Anatolia, Western Palaearctic...
2 CitationsSource
#1Sabrina van de Velde (Naturalis)H-Index: 2
#2T. Yanina (MSU: Moscow State University)H-Index: 6
Last. Frank P. Wesselingh (Naturalis)H-Index: 26
view all 4 authors...
Abstract The native Caspian Sea fauna underwent severe changes since the early 20th century, mostly due to anthropogenic activities. However, the nature, magnitude and rate of biodiversity change can only be assessed by comparison with natural baseline settings. A mostly in-situ mollusk fauna retrieved from Late Pleistocene (Hyrcanian, 107 ± 7 ka) deposits at Selitrennoye (Astrakhan province, Russia) provides a snapshot of a natural Caspian assemblage. In total, 24 gastropod and 13 bivalve speci...
1 CitationsSource
#1Klaus Arpe (MPG: Max Planck Society)H-Index: 26
#2Ben-Jei Tsuang (NCHU: National Chung Hsing University)H-Index: 15
Last. Suzanne A.G. Leroy (AMU: Aix-Marseille University)H-Index: 32
view all 5 authors...
With a fall of the Caspian Sea level (CSL), its size gets smaller and therefore the total evaporation over the sea is reduced. With a reduced evaporation from the sea, the fall of the CSL is weakened. This creates a negative feedback as less evaporation leads to less water losses of the Caspian Sea (CS). On the other hand, less evaporation reduces the water in the atmosphere, which may lead to less precipitation in the catchment area of the CS. The two opposite feedbacks are estimated by using a...
6 CitationsSource
#1Frank P. WesselinghH-Index: 26
#2Thomas A. NeubauerH-Index: 10
Last. Thomas WilkeH-Index: 33
view all 21 authors...
7 CitationsSource
#1Frank P. WesselinghH-Index: 26
#2Thomas A. NeubauerH-Index: 10
Last. Thomas WilkeH-Index: 33
view all 21 authors...
Defining and recording the loss of species diversity is a daunting task, especially if identities of species under threat are not fully resolved. An example is the Pontocaspian biota. The mostly endemic invertebrate faunas that evolved in the Black Sea – Caspian Sea – Aral Sea region and live under variable salinity conditions are undergoing strong change, yet within several groups species boundaries are not well established. Collection efforts in the past decade have failed to produce living ma...
3 Citations
#1Wout Krijgsman (UU: Utrecht University)H-Index: 56
#2Alexey S. Tesakov (RAS: Russian Academy of Sciences)H-Index: 16
Last. Frank P. Wesselingh (Naturalis)H-Index: 26
view all 28 authors...
The Pontocaspian (Black Sea - Caspian Sea) region has a very dynamic history of basin development and biotic evolution. The region is the remnant of a once vast Paratethys Sea. It contains some of the best Eurasian geological records of tectonic, climatic and paleoenvironmental change. The Pliocene-Quaternary co-evolution of the Black Sea-Caspian Sea is dominated by major changes in water (lake and sea) levels resulting in a pulsating system of connected and isolated basins. Understanding the hi...
20 CitationsSource
2 CitationsSource
#1Thomas A. NeubauerH-Index: 10
Last. Frank P. WesselinghH-Index: 26
view all 4 authors...
4 CitationsSource
#1Suzanne A.G. Leroy (AMU: Aix-Marseille University)H-Index: 32
#2Françoise Chalié (AMU: Aix-Marseille University)H-Index: 17
Last. Klaus Arpe (MPG: Max Planck Society)H-Index: 26
view all 14 authors...
1. Introduction The lack of long-term data on the response of aquatic systems to water-level and climatic changes is seen as an impediment to the assessment of the vulnerability and risks that large water-bodies face with respect to ongoing and future global changes. Petroleum, fishing (e.g. for caviar) and tourism industries, and governments are struggling to understand the vulnerabilities and risk associated with the unprecedented rate of environmental change and the consequences for ecosystem...
5 CitationsSource
Cited By0
#1Thomas A. Neubauer (University of Giessen)H-Index: 10
#2Olga Yu. Anistratenko (NASU: National Academy of Sciences of Ukraine)H-Index: 3
Last. Frank P. Wesselingh (Naturalis)H-Index: 26
view all 8 authors...