Nutrient recycling by insect and fish communities in high-elevation tropical streams
High- to mid-elevation streams are often oligotrophic, but harbor diverse groups of aquatic animals that can satisfy a substantial proportion of nutrient demand. Therefore, we tested the proportion of nutrient demand met by two dominant guilds of animal consumers in the Andes to ask: (1) Do excretio...
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| Veröffentlicht in: | Hydrobiologia 2019-07, Vol.838 (1), p.13-28 |
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| creator | Atkinson, Carla L. Alexiades, Alexander V. MacNeill, Keeley L. Encalada, Andrea C. Thomas, Steve A. Flecker, Alexander S. |
| description | High- to mid-elevation streams are often oligotrophic, but harbor diverse groups of aquatic animals that can satisfy a substantial proportion of nutrient demand. Therefore, we tested the proportion of nutrient demand met by two dominant guilds of animal consumers in the Andes to ask: (1) Do excretion rates vary between insects and fish in montane tropical stream ecosystems? (2) What consumer guild dominates areal nutrient regeneration? (3) What is the nutrient demand and what proportion are consumer taxa regenerating? We combined aquatic insect and fish biomass estimates with measured excretion rates of two fish species (one native, one introduced) and six aquatic insects and estimated nutrient demand in streams by conducting nutrient uptake measurements. Insect taxa had higher per-capita excretion rates than fish and had higher excretion N:P. Aquatic insect biomass tended to be higher than fish biomass and consequently total areal excretion rates by insects were higher. Collectively, communities contributed up to 15–24% of NH
4
–N demand and 1–19% of SRP demand. The additive effect of these groups on nutrient availability is likely an important function in low-nutrient tropical streams. Further work needs to be conducted to examine the interactions within entire communities and consequential impacts on nutrient cycling. |
| doi_str_mv | 10.1007/s10750-019-03973-9 |
| format | Article |
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4
–N demand and 1–19% of SRP demand. The additive effect of these groups on nutrient availability is likely an important function in low-nutrient tropical streams. Further work needs to be conducted to examine the interactions within entire communities and consequential impacts on nutrient cycling.</description><identifier>ISSN: 0018-8158</identifier><identifier>EISSN: 1573-5117</identifier><identifier>DOI: 10.1007/s10750-019-03973-9</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Additives ; Aquatic animals ; Aquatic insects ; Biomass ; Biomedical and Life Sciences ; Communities ; Demand ; Ecology ; Ecosystems ; Elevation ; Excretion ; Fish ; Fishes ; Freshwater & Marine Ecology ; Guilds ; Indigenous species ; Insects ; Insects, Aquatic ; Interactions ; Introduced species ; Life Sciences ; Mineral nutrients ; Mountain ecology ; Nutrient availability ; Nutrient cycles ; Nutrient uptake ; Primary Research Paper ; Regeneration ; Regeneration (biological) ; Rivers ; Streams ; Taxa ; Tropical climate ; Uptake ; Zoology</subject><ispartof>Hydrobiologia, 2019-07, Vol.838 (1), p.13-28</ispartof><rights>Springer Nature Switzerland AG 2019</rights><rights>COPYRIGHT 2019 Springer</rights><rights>Hydrobiologia is a copyright of Springer, (2019). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c392t-b4e63747af53b796a8dfa267d29d1b773a401b2c49c3f9dee4f8c4aaa388c5ff3</citedby><cites>FETCH-LOGICAL-c392t-b4e63747af53b796a8dfa267d29d1b773a401b2c49c3f9dee4f8c4aaa388c5ff3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10750-019-03973-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10750-019-03973-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51298</link.rule.ids></links><search><creatorcontrib>Atkinson, Carla L.</creatorcontrib><creatorcontrib>Alexiades, Alexander V.</creatorcontrib><creatorcontrib>MacNeill, Keeley L.</creatorcontrib><creatorcontrib>Encalada, Andrea C.</creatorcontrib><creatorcontrib>Thomas, Steve A.</creatorcontrib><creatorcontrib>Flecker, Alexander S.</creatorcontrib><title>Nutrient recycling by insect and fish communities in high-elevation tropical streams</title><title>Hydrobiologia</title><addtitle>Hydrobiologia</addtitle><description>High- to mid-elevation streams are often oligotrophic, but harbor diverse groups of aquatic animals that can satisfy a substantial proportion of nutrient demand. Therefore, we tested the proportion of nutrient demand met by two dominant guilds of animal consumers in the Andes to ask: (1) Do excretion rates vary between insects and fish in montane tropical stream ecosystems? (2) What consumer guild dominates areal nutrient regeneration? (3) What is the nutrient demand and what proportion are consumer taxa regenerating? We combined aquatic insect and fish biomass estimates with measured excretion rates of two fish species (one native, one introduced) and six aquatic insects and estimated nutrient demand in streams by conducting nutrient uptake measurements. Insect taxa had higher per-capita excretion rates than fish and had higher excretion N:P. Aquatic insect biomass tended to be higher than fish biomass and consequently total areal excretion rates by insects were higher. Collectively, communities contributed up to 15–24% of NH
4
–N demand and 1–19% of SRP demand. The additive effect of these groups on nutrient availability is likely an important function in low-nutrient tropical streams. Further work needs to be conducted to examine the interactions within entire communities and consequential impacts on nutrient cycling.</description><subject>Additives</subject><subject>Aquatic animals</subject><subject>Aquatic insects</subject><subject>Biomass</subject><subject>Biomedical and Life Sciences</subject><subject>Communities</subject><subject>Demand</subject><subject>Ecology</subject><subject>Ecosystems</subject><subject>Elevation</subject><subject>Excretion</subject><subject>Fish</subject><subject>Fishes</subject><subject>Freshwater & Marine Ecology</subject><subject>Guilds</subject><subject>Indigenous species</subject><subject>Insects</subject><subject>Insects, Aquatic</subject><subject>Interactions</subject><subject>Introduced species</subject><subject>Life Sciences</subject><subject>Mineral nutrients</subject><subject>Mountain ecology</subject><subject>Nutrient availability</subject><subject>Nutrient cycles</subject><subject>Nutrient uptake</subject><subject>Primary Research Paper</subject><subject>Regeneration</subject><subject>Regeneration (biological)</subject><subject>Rivers</subject><subject>Streams</subject><subject>Taxa</subject><subject>Tropical 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streams</atitle><jtitle>Hydrobiologia</jtitle><stitle>Hydrobiologia</stitle><date>2019-07-01</date><risdate>2019</risdate><volume>838</volume><issue>1</issue><spage>13</spage><epage>28</epage><pages>13-28</pages><issn>0018-8158</issn><eissn>1573-5117</eissn><abstract>High- to mid-elevation streams are often oligotrophic, but harbor diverse groups of aquatic animals that can satisfy a substantial proportion of nutrient demand. Therefore, we tested the proportion of nutrient demand met by two dominant guilds of animal consumers in the Andes to ask: (1) Do excretion rates vary between insects and fish in montane tropical stream ecosystems? (2) What consumer guild dominates areal nutrient regeneration? (3) What is the nutrient demand and what proportion are consumer taxa regenerating? We combined aquatic insect and fish biomass estimates with measured excretion rates of two fish species (one native, one introduced) and six aquatic insects and estimated nutrient demand in streams by conducting nutrient uptake measurements. Insect taxa had higher per-capita excretion rates than fish and had higher excretion N:P. Aquatic insect biomass tended to be higher than fish biomass and consequently total areal excretion rates by insects were higher. Collectively, communities contributed up to 15–24% of NH
4
–N demand and 1–19% of SRP demand. The additive effect of these groups on nutrient availability is likely an important function in low-nutrient tropical streams. Further work needs to be conducted to examine the interactions within entire communities and consequential impacts on nutrient cycling.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s10750-019-03973-9</doi><tpages>16</tpages></addata></record> |
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| subjects | Additives Aquatic animals Aquatic insects Biomass Biomedical and Life Sciences Communities Demand Ecology Ecosystems Elevation Excretion Fish Fishes Freshwater & Marine Ecology Guilds Indigenous species Insects Insects, Aquatic Interactions Introduced species Life Sciences Mineral nutrients Mountain ecology Nutrient availability Nutrient cycles Nutrient uptake Primary Research Paper Regeneration Regeneration (biological) Rivers Streams Taxa Tropical climate Uptake Zoology |
| title | Nutrient recycling by insect and fish communities in high-elevation tropical streams |
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