caa a22 4500 397571178 CHVBK 20180308164841.0 cr unu---uuuuu 161202e19961001xx s 000 0 eng 10.1093/ee/25.5.1122 doi (NATIONALLICENCE)oxford-10.1093/ee/25.5.1122 Impact of Ischnodemus falicus (Hemiptera: Lygaeidae) on Photosynthesis and Production of Spartina pectinata Wetlands [Elektronische Daten] [Stephen R. Johnson, Alan K. Knapp] Wetlands dominated by the C4 grass. Spartina pectinata (Link), were investigated to quantity the effects of high densities of lsehnodemus falicus (Say) on leaf-level photosynthesis and aboveground biomass production. Photosynthetic rates of plants within heavily infested stands were greatly reduced from that of plants supporting low densities of I. falicus. In early May 1993, photosynthetic rates of S. pectinata with minor I. falicus presence were >30 μmol m−2 s−1 with peak rates of 45 μmo1 m−2 s−1 in mid-June. In nearby infested S. pectinata wetlands, individual plants had rates as low as 5 μmol m−2 s−1 in early May and peak rates of 24 μmol m−2 s−1 in mid-July. Along with reduced photosynthetic rates, plants hosting high insect densities had lower aboveground production than did plants that had low insect densities. In 1994, when insect densities were ubiquitously low, there were no differences in peak photosynthetic rates or biomass accumulation between stands of S. pectinata that had been host to high versus low densities of insects in 1993. Thus, although infestation of I. falicus on S. pectinata had significant short-term effects, the lack of a long-term effect suggests that S. pectinata can successfully deal with periodic insect outbreaks. © 1996 Entomological Society of America Population Ecology nationallicence lschnodemus falicus nationallicence Spartina pectinata nationallicence prairie wetlands nationallicence infestation nationallicence photosynthesis nationallicence biomass nationallicence Johnson Stephen R. Division of Biology, Ackert Hall, Kansas State University, Manhattan, KS 66506 aut Knapp Alan K. Division of Biology, Ackert Hall, Kansas State University, Manhattan, KS 66506 aut Environmental Entomology Oxford University Press 25/5(1996-10-01), 1122-1127 0046-225X 25:5<1122 1996 25 ee https://doi.org/10.1093/ee/25.5.1122 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.5.1122 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Johnson Stephen R. Division of Biology, Ackert Hall, Kansas State University, Manhattan, KS 66506 aut NATIONALLICENCE 700 1- Knapp Alan K. Division of Biology, Ackert Hall, Kansas State University, Manhattan, KS 66506 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/5(1996-10-01), 1122-1127 0046-225X 25:5<1122 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford