Fluctuating pond water levels and aquatic insect persistence in a drought-prone Mediterranean-type climate
In dry areas, natural and artificial ponds experience frequent water level fluctuation, affecting conditions for some aquatic and amphibiotic taxa. Water beetles, bugs, and dragonflies make up much of pond diversity, and are responsive to changes in environmental conditions. Using a drought-prone po...
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| Veröffentlicht in: | Hydrobiologia 2020-03, Vol.847 (5), p.1315-1326 |
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| creator | Jooste, Megan L. Samways, Michael J. Deacon, Charl |
| description | In dry areas, natural and artificial ponds experience frequent water level fluctuation, affecting conditions for some aquatic and amphibiotic taxa. Water beetles, bugs, and dragonflies make up much of pond diversity, and are responsive to changes in environmental conditions. Using a drought-prone pondscape within the Greater Cape Floristic Region biodiversity hotspot, we determine (1) the relative extent to which species richness, abundance, and composition are affected by pond water level fluctuation, (2) the effects of environmental variables and vegetation characteristics relative to fluctuating water levels, and (3) make recommendations to improve pondscape conservation. We found that the degree of fluctuation had a significant effect on beetle species richness, but had no significant effect on the other focal taxa. Water temperature, pH, and conductivity, and vegetation cover and composition were drivers of aquatic insect species richness, abundances, and assemblage structures. Habitat heterogeneity supported rich aquatic insect assemblages. We recommend that a range of ponds with various degrees of water level fluctuation should be maintained, along with naturally diverse marginal vegetation. Such a dynamic pondscape can contribute greatly towards maintenance of local and regional aquatic insect diversity in drought-prone regions and should be considered as a main focus in conservation efforts. |
| doi_str_mv | 10.1007/s10750-020-04186-1 |
| format | Article |
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Water beetles, bugs, and dragonflies make up much of pond diversity, and are responsive to changes in environmental conditions. Using a drought-prone pondscape within the Greater Cape Floristic Region biodiversity hotspot, we determine (1) the relative extent to which species richness, abundance, and composition are affected by pond water level fluctuation, (2) the effects of environmental variables and vegetation characteristics relative to fluctuating water levels, and (3) make recommendations to improve pondscape conservation. We found that the degree of fluctuation had a significant effect on beetle species richness, but had no significant effect on the other focal taxa. Water temperature, pH, and conductivity, and vegetation cover and composition were drivers of aquatic insect species richness, abundances, and assemblage structures. Habitat heterogeneity supported rich aquatic insect assemblages. We recommend that a range of ponds with various degrees of water level fluctuation should be maintained, along with naturally diverse marginal vegetation. Such a dynamic pondscape can contribute greatly towards maintenance of local and regional aquatic insect diversity in drought-prone regions and should be considered as a main focus in conservation efforts.</description><identifier>ISSN: 0018-8158</identifier><identifier>EISSN: 1573-5117</identifier><identifier>DOI: 10.1007/s10750-020-04186-1</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Abundance ; Amphibiotic species ; Aquatic habitats ; Aquatic insects ; Artificial ponds ; Beetles ; Biodiversity ; Biodiversity hot spots ; Biological diversity ; Biomedical and Life Sciences ; Climate ; Composition ; Conservation ; Drought ; Droughts ; Ecology ; Electric properties ; Environmental changes ; Environmental conditions ; Environmental effects ; Environmental quality ; Freshwater & Marine Ecology ; Heterogeneity ; Insects ; Insects, Aquatic ; Life Sciences ; Plant cover ; Ponds ; Primary Research Paper ; Species richness ; Taxa ; Vegetation ; Vegetation cover ; Water level fluctuations ; Water levels ; Water shortages ; Water temperature ; Zoology</subject><ispartof>Hydrobiologia, 2020-03, Vol.847 (5), p.1315-1326</ispartof><rights>Springer Nature Switzerland AG 2020</rights><rights>COPYRIGHT 2020 Springer</rights><rights>Hydrobiologia is a copyright of Springer, (2020). 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Water beetles, bugs, and dragonflies make up much of pond diversity, and are responsive to changes in environmental conditions. Using a drought-prone pondscape within the Greater Cape Floristic Region biodiversity hotspot, we determine (1) the relative extent to which species richness, abundance, and composition are affected by pond water level fluctuation, (2) the effects of environmental variables and vegetation characteristics relative to fluctuating water levels, and (3) make recommendations to improve pondscape conservation. We found that the degree of fluctuation had a significant effect on beetle species richness, but had no significant effect on the other focal taxa. Water temperature, pH, and conductivity, and vegetation cover and composition were drivers of aquatic insect species richness, abundances, and assemblage structures. Habitat heterogeneity supported rich aquatic insect assemblages. We recommend that a range of ponds with various degrees of water level fluctuation should be maintained, along with naturally diverse marginal vegetation. Such a dynamic pondscape can contribute greatly towards maintenance of local and regional aquatic insect diversity in drought-prone regions and should be considered as a main focus in conservation efforts.</description><subject>Abundance</subject><subject>Amphibiotic species</subject><subject>Aquatic habitats</subject><subject>Aquatic insects</subject><subject>Artificial ponds</subject><subject>Beetles</subject><subject>Biodiversity</subject><subject>Biodiversity hot spots</subject><subject>Biological diversity</subject><subject>Biomedical and Life Sciences</subject><subject>Climate</subject><subject>Composition</subject><subject>Conservation</subject><subject>Drought</subject><subject>Droughts</subject><subject>Ecology</subject><subject>Electric properties</subject><subject>Environmental changes</subject><subject>Environmental conditions</subject><subject>Environmental effects</subject><subject>Environmental quality</subject><subject>Freshwater & Marine Ecology</subject><subject>Heterogeneity</subject><subject>Insects</subject><subject>Insects, Aquatic</subject><subject>Life Sciences</subject><subject>Plant cover</subject><subject>Ponds</subject><subject>Primary Research Paper</subject><subject>Species richness</subject><subject>Taxa</subject><subject>Vegetation</subject><subject>Vegetation cover</subject><subject>Water level fluctuations</subject><subject>Water levels</subject><subject>Water shortages</subject><subject>Water temperature</subject><subject>Zoology</subject><issn>0018-8158</issn><issn>1573-5117</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp9kU9rFjEQxhdR8LX6BTwFPHlIzWySTfZYiq2FiuCfc0izk3VfttltklX77Z26gvQiIQQmv-eZSZ6meQ3iFIQw7woIowUXLW0FtuPwpDmANpJrAPO0OQgBllvQ9nnzopSjIFHfikNzvJi3UDdfpzSydUkD--krZjbjD5wL81Twdw_XgU2pYKhsxVymUjEFpBLzbMjLNn6vfM1LQvYRh4kMsk_oE6_3K7IwT7dk-rJ5Fv1c8NXf86T5dvH-6_kHfv3p8ur87JoH2beVtwMKE7ooe1A2tJ0CpY228cZHYXWwZrAxgldqGMD7zvQ29l3sPARtwN4YedK82X1poLsNS3XHZcuJWrpW6s6CVUYQdbpTo5_RTSkuNftAa8DbKdBL4kT1sw5UK2WvJAnePhIQU_FXHf1Wirv68vkx2-5syEspGaNbM_1Bvncg3ENgbg_MUWDuT2AOSCR3USE4jZj_zf0f1W8iOJia</recordid><startdate>20200301</startdate><enddate>20200301</enddate><creator>Jooste, Megan L.</creator><creator>Samways, Michael J.</creator><creator>Deacon, Charl</creator><general>Springer International Publishing</general><general>Springer</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QH</scope><scope>7SN</scope><scope>7SS</scope><scope>7U7</scope><scope>7UA</scope><scope>88A</scope><scope>8AO</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>H95</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>LK8</scope><scope>M7N</scope><scope>M7P</scope><scope>P64</scope><scope>PATMY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>RC3</scope><orcidid>https://orcid.org/0000-0003-4601-2739</orcidid><orcidid>https://orcid.org/0000-0003-4237-6025</orcidid></search><sort><creationdate>20200301</creationdate><title>Fluctuating pond water levels and aquatic insect persistence in a drought-prone Mediterranean-type climate</title><author>Jooste, Megan L. ; 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Water beetles, bugs, and dragonflies make up much of pond diversity, and are responsive to changes in environmental conditions. Using a drought-prone pondscape within the Greater Cape Floristic Region biodiversity hotspot, we determine (1) the relative extent to which species richness, abundance, and composition are affected by pond water level fluctuation, (2) the effects of environmental variables and vegetation characteristics relative to fluctuating water levels, and (3) make recommendations to improve pondscape conservation. We found that the degree of fluctuation had a significant effect on beetle species richness, but had no significant effect on the other focal taxa. Water temperature, pH, and conductivity, and vegetation cover and composition were drivers of aquatic insect species richness, abundances, and assemblage structures. Habitat heterogeneity supported rich aquatic insect assemblages. We recommend that a range of ponds with various degrees of water level fluctuation should be maintained, along with naturally diverse marginal vegetation. Such a dynamic pondscape can contribute greatly towards maintenance of local and regional aquatic insect diversity in drought-prone regions and should be considered as a main focus in conservation efforts.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s10750-020-04186-1</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0003-4601-2739</orcidid><orcidid>https://orcid.org/0000-0003-4237-6025</orcidid></addata></record> |
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| subjects | Abundance Amphibiotic species Aquatic habitats Aquatic insects Artificial ponds Beetles Biodiversity Biodiversity hot spots Biological diversity Biomedical and Life Sciences Climate Composition Conservation Drought Droughts Ecology Electric properties Environmental changes Environmental conditions Environmental effects Environmental quality Freshwater & Marine Ecology Heterogeneity Insects Insects, Aquatic Life Sciences Plant cover Ponds Primary Research Paper Species richness Taxa Vegetation Vegetation cover Water level fluctuations Water levels Water shortages Water temperature Zoology |
| title | Fluctuating pond water levels and aquatic insect persistence in a drought-prone Mediterranean-type climate |
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