A Study of the Population of Insects Emerging as Adults from the Dundas Marsh, Hamilton, Ontario, During 1948

Judd, W. W.

doi:10.2307/2485209

Cited by 31 publications

(19 citation statements)

References 9 publications

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“…For example, I 1,000 -14,000 adults m 2 yr -1 emerged from two shallow eutrophic ponds in Hertfordshire, England (Learner andPotter 1974). Adult emergence in the Dundas Marsh, Ontario, ranged from 595 -9,456 m 2 yr ~ (calculated from data in Judd 1953). Emergence from a bog pool in southern Ontario ranged from 1,397 -19,020 m z yr 1 (calculated from data in Judd 1958).…”

Section: Abundancesmentioning

confidence: 99%

“…Tanypus species often dominate in shallow waters (e.g., Judd 1953, Heuschelc 1969, Titmus 1979, Parkin and Stahl 1981. They prefer soft mud substrates through which they can move easily and abundant diatom and algal growth upon which they feed (Titmus and Badcock 1981, but also see Fellton 1940and Roback 1977 for evidence for predatory behaviour by this species).…”

Section: Habitat Differencesmentioning

confidence: 99%

“…Judd (1949Judd ( , 1953 described species composition and emergence phenologies of Chironomidae in Dundas Marsh, Ontario, andWrubleski (1987) previded a general description of the chironomid fauna of the Delta Marsh, Manitoba. Other emergence studies have been done in similar types of habitats (e.g., Driver 1977, Wiederholm et aL 1977, Learner et al 1989.…”

Section: Introductionmentioning

confidence: 99%

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The Chironomidae (diptera) of bone pile pond, Delta Marsh, Manitoba, Canada

Wrubleski

Rosenberg²

1990

Wetlands

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Abstrac¢: Adult midge flies, Chironomidae, were collected by emergence traps from a shallow, semi-isolated bay of the Delta Marsh, Manitoba, over a two-year period. Three habitats were sampled-sago pondweed (Potamogeton pectinatus), hybrid cattail (Typha x glauca), and hardstem bulrush (Scirpus acutus). The pondweed habitat was the most productive of the three habitats sampled, both in terms of numbers and biomass of emerging chironornids. Eighty-four species were collected, the most abundant being Tanyp us punctipennis, Psectrotanypus ataskensis, Cricotopus sylvestris, Corynoneuracf.scutellata, Limnophyes prolongatus, L. im,,nucronatus, Glyptotendipes barbipes, G. lobiferus, Chironomus tentans, Dicrotendipes nervosus, Paratanytars~ts sp. 1, and Cladotanytarsus sp. Most of the dominant species were bi-or multivoltine, but considerable inter-annual variation was noted in emergence rates and patterns.

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Section: Abundancesmentioning

confidence: 99%

Section: Habitat Differencesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Chironomidae (diptera) of bone pile pond, Delta Marsh, Manitoba, Canada

Wrubleski

Rosenberg²

1990

Wetlands

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“…The precise time of emergence can vary from year to year but is always during May or early June and is determined by the completion of a temperaturecontrolled development cycle . For field studies it is convenient to express the length of the larval lifecycle as accumulated day-degrees of temperature (Miller 1941 ;Judd 1953 ;Konstantinov 1958 A summer generation of C. plumosus followed the emergence but there was a delay of about four weeks before the development of the larval population could be detected in the bottom fauna . By mid-June, larvae were in the 4th instar stage ; by mid-July, the larvae had increased to a dry weight of 3 .5 mg per individual and pupated, giving rise to small imagos which contrasted with the large imagos of the overwintering generation .…”

Section: Biomass Dominant Speciesmentioning

confidence: 99%

Distribution and production of the larval chironomid populations in Tjeukemeer

Beattie¹

1982

Hydrobiologia

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The distribution and production of larval chironomids in Tjeukemeer, a shallow, moderately large and wind exposed lake, were estimated between 1969 and 1972 . The following seven species together contributed more than 95% of all the individuals collected: Chironomus anthracinus, Chironomus plumosus, Cladotanytarsus mancus, Glyptotendipes pallens, Polypedilum nubeculosum, Polypedilum scalaenum and Stictochironomus histrio . Density and biomass distribution depended generally on the substrate type and its stability .

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“…However, Craven and Hunt (1984) found that C. demersum formed component of food in certain species of waterfowl. Other species viz., H. verticillata, L. minor, A. pinnata and P. crispus also provide food and shelter to many insects, fish and wetland bird species (Banerjee et al, 2012;Esler, 1989;Johnson and Montalbano, 1984;Judd, 1953;O'meara, 1982;Scotland, 1940).…”

Section: Water Qualitymentioning

confidence: 99%

Assessment of Wetland Water Quality and Avian Diversity of a Human-Modified Floodplain Wetland on River Yamuna

Manral

Khudsar

2013

Not Sci Biol

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Okhla Bird Sanctuary (OBS) is an Important Bird Area, which comes under the protected area network of Uttar Pradesh with one-third area lying in the state of Delhi (India). OBS has widest flood plains along the Delhi stretch of river Yamuna and is important in conserving the ecological wealth of floodplains of the river. Rapid urbanization and industrialization and discharge of untreated wastewater into the river have resulted in deteriorated water quality. The present study focused on assessment of water quality, aquatic flora and avifaunal diversity in the OBS. Water quality was analyzed following methods of APHA. For vegetation analysis, sub-merged and free-floating plants were scooped up from five randomly selected sites. Total bird counts were conducted for water birds and species richness, evenness and Shannon-Weaver species diversity indices were calculated. Results indicate that the organic load is very high in the wetland as evident from low levels of dissolved oxygen (2.26 ± 1.62 mg/l) and high Biological and Chemical Oxygen Demands (15.20 ± 3.75 mg/l, 44.60 ± 12.07 mg/l). Nine species of free-floating and submerged plants were recorded; Hydrilla verticillata, Vallisneria spiralis, Azolla pinnata and Ceratophyllum demersum dominated both deep and shallow water areas. 52 species of waterbirds including four near-threatened species viz., Anhinga melanogaster, Mycteria leucocephala, Threskiornis melanocephalus and Aythya nyroca were recorded. OBS provides opportunities for conservation in a metropolitan area, thus, appropriate measures should be taken to maintain its ecological integrity.

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A Study of the Population of Insects Emerging as Adults from the Dundas Marsh, Hamilton, Ontario, During 1948

Cited by 31 publications

References 9 publications

The Chironomidae (diptera) of bone pile pond, Delta Marsh, Manitoba, Canada

The Chironomidae (diptera) of bone pile pond, Delta Marsh, Manitoba, Canada

Distribution and production of the larval chironomid populations in Tjeukemeer

Assessment of Wetland Water Quality and Avian Diversity of a Human-Modified Floodplain Wetland on River Yamuna

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