Experimental Acidification of Little Rock Lake, Wisconsin: Chemical and Biological Changes over the pH Range 6.1 to 4.7

1993 ◽  
Vol 50 (5) ◽  
pp. 1101-1121 ◽  
Author(s):  
P. L. Brezonik ◽  
J. G. Eaton ◽  
T. M. Frost ◽  
P. J. Garrison ◽  
T. K. Kratz ◽  
...  
Keyword(s):  
Micropterus Salmoides ◽  
Little Rock ◽  
Pomoxis Nigromaculatus ◽  
Food Web Interactions ◽  
Biological Responses ◽  
Seepage Lake ◽  
Experimental Acidification ◽  
Ph Range ◽  
Ambloplites Rupestris ◽  
Oak Leaves

The two basins of this seepage lake were separated by a vinyl curtain in August 1984 after a year of background studies, and acidification of one basin with H2SO4 began at ice-out in 1985. Chemical and biological responses measured during successive 2-yr periods at pH ~5.6, 5.1, and 4.7 verified some but not all impacts predicted at the outset. Changes in major, minor, and trace ions generally agreed with predictions. Internal alkalinity generation (IAG) increased at lower pH, and sulfate reduction eliminated ~50% of added H2SO4. Sediment cation exchange was important in IAG and acidified surface sediments, possibly diminishing the lake's ability to counteract further H+ inputs. Mass loss of oak leaves was reduced at pH 5.1 (birch leaves at pH 4.7). Population parameters were more sensitive than community measures for plankton. Species composition changed at each pH, especially at pH 4.7. Many changes in zoopiankton and benthos were indirect responses to an algal mat that developed at lower pH or to food web interactions; these were not predicted accurately. Sensitivity of major fishes to lower pH was Ambloplites rupestris > Micropterus salmoides > Pomoxis nigromaculatus > Perca flavescens. Fish production was reduced at pH's above those resulting in population decreases.

Feeding Biology of the Black Crappie, Pomoxis nigromaculatus

1968 ◽  
Vol 25 (2) ◽  
pp. 285-297 ◽  
Author(s):  
Allen Keast
Keyword(s):  
Body Length ◽  
Micropterus Salmoides ◽  
Lepomis Macrochirus ◽  
Insect Larvae ◽  
Progressive Change ◽  
Pomoxis Nigromaculatus ◽  
Feeding Biology ◽  
Ambloplites Rupestris ◽  
Gill Raker ◽  
Diptera Larvae

In Lake Opinicon, Ontario, the diet of the black crappie, Pomoxis nigromaculatus, undergoes a progressive change from one in which planktonic Crustacea and small-bodied Diptera larvae predominate (in fish of body length from about 60 to 115 mm), to a diet of insect larvae and fish (in fish 160–240 mm). Most food items prove to be midwater forms and the Diptera larvae are almost entirely Chaoborus and Procladius, which are free-swimming in the water column at night.An unusual feature is the prolonged nature of the Cladocera-Copepoda eating phase, which continues into year III and to a body length of about 160 mm. Gill-raker counts show P. nigromaculatus to have a specialized screen with 25–29 rakers on the first arch. In this it differs from cohabiting centrarchids in Lake Opinicon, Ambloplites rupestris, Micropterus salmoides, and Lepomis macrochirus, in which the rakers on the first arch number only 8–12. In these species plankton feeding is restricted to the earlier stages.

Complex biological responses to the experimental acidification of Little Rock Lake, Wisconsin, USA

1992 ◽  
Vol 78 (1-3) ◽  
pp. 73-78 ◽  
Author(s):  
K.E. Webster ◽  
T.M. Frost ◽  
C.J. Watras ◽  
W.A. Swenson ◽  
M. Gonzalez ◽  
...  
Keyword(s):  
Little Rock ◽  
Biological Responses ◽  
Little Rock Lake ◽  
Experimental Acidification ◽  
Rock Lake

Indirect effects of lake acidification on Chaoborus population dynamics: the role of food limitation and predation

1997 ◽  
Vol 54 (3) ◽  
pp. 637-646 ◽  
Author(s):  
J M Fischer ◽  
T M Frost
Keyword(s):  
Food Limitation ◽  
Fish Predation ◽  
Invertebrate Predation ◽  
Little Rock ◽  
Chaoborus Punctipennis ◽  
Consistent Manner ◽  
Experimental Acidification ◽  
Ambloplites Rupestris ◽  
Mesocyclops Edax

A twofold increase in Chaoborus punctipennis abundance following experimental acidification of one basin of Little Rock Lake, Wisconsin, provided an opportunity to examine the hypotheses that C. punctipennis dynamics were regulated by (i) food resources for instars I and II, (ii) fish predation on instars III and IV, and (iii) invertebrate predation on instars I and II. Neither food limitation nor fish predation appeared to be important constraints on C. punctipennis abundance. Although rotifer biomass increased significantly during the acidification, C. punctipennis did not respond in a consistent manner to variation in food availability. Bioenergetics estimates of C. punctipennis consumption by rock bass (Ambloplites rupestris), the most acid-sensitive fish species, were small compared with C. punctipennis production. In contrast, invertebrate predation appeared to be an important constraint on C. punctipennis abundance. Chaoborus punctipennis abundance increased dramatically when abundance of the predator Mesocyclops edax declined to near zero. Comparison of M. edax predation rates and first instar production suggested that M. edax could exert strong predation pressure on C. punctipennis Thus, invertebrate predation may create a juvenile bottleneck for populations of small-bodied Chaoborus species in moderately productive acidified lakes.

Experimental acidification of Little Rock Lake (Wisconsin): Fish research approach and early responses

1989 ◽  
Vol 18 (1-2) ◽  
pp. 167-174 ◽  
Author(s):  
William A. Swenson ◽  
J. Howard McCormick ◽  
Timothy D. Simonson ◽  
Kathleen M. Jensen ◽  
John G. Eaton
Keyword(s):  
Research Approach ◽  
Little Rock ◽  
Little Rock Lake ◽  
Experimental Acidification ◽  
Rock Lake

Experimental acidification of Little Rock Lake, Wisconsin: The first four years of chemical and biological recovery

1995 ◽  
Vol 85 (3) ◽  
pp. 1713-1719 ◽  
Author(s):  
C. J. Sampson ◽  
P. L. Brezonk ◽  
T. M. Frost ◽  
K. E. Webster ◽  
T. D. Simonson
Keyword(s):  
Little Rock ◽  
Biological Recovery ◽  
Little Rock Lake ◽  
Experimental Acidification ◽  
Rock Lake

Balancing Fisheries Management and Water Uses for Impounded River Systems

2008 ◽  
Keyword(s):  
Micropterus Salmoides ◽  
Lepomis Macrochirus ◽  
Northern Pike ◽  
Smallmouth Bass ◽  
Biological Information ◽  
Specific Work ◽  
Pomoxis Nigromaculatus ◽  
Management Responsibility ◽  
Species Specific ◽  
Individualized Management

<em>Abstract</em>.—In the 1990s, the Minnesota Department of Natural Resources, Fisheries Section, responded to angler requests to manage the state’s waters on a more individual basis. Individual waters management often included the development of length-based regulations and/or bag limit reductions. Although the move towards individual waters management was biologically sound and by and large supported by anglers, it also created some problems. By the late 1990s, there were more than 150 specialized regulations for northern pike <em>Esox lucius</em>, walleyes <em>Sander vitreus</em>, largemouth bass <em>Micropterus salmoides</em>, smallmouth bass <em>M. dolomieu</em>, black crappies <em>Pomoxis nigromaculatus</em>, white crappies <em>P. annularis</em>, and bluegills <em>Lepomis macrochirus</em>. With management responsibility on more than 6,000 lakes, it became clear that some type of regulation streamlining or standardization was needed. Public input meetings indicated that anglers wanted continued individualized management of lakes and the opportunity to catch quality-sized fish but were concerned about the growing number and complexity of regulations. In response, species-specific work groups consisting of research and management biologists were formed to identify what biological information was available and what was needed to develop a set of species-specific regulations. Standardized regulations were developed for northern pike, walleyes, largemouth and smallmouth bass, bluegills, and both species of crappies. We discuss the development of the standardized regulations for crappies, where size and bag limit categories were established based on growth and natural mortality targets. Future field collections will be required to measure the effectiveness of these regulations.

Observations on the glochidia of Lampsilis radiata (Gmelin) infesting yellow perch, Perca flavescens (Mitchill) in the Bay of Quinte, Lake Ontario

1969 ◽  
Vol 47 (4) ◽  
pp. 705-712 ◽  
Author(s):  
Shibru Tedla ◽  
C. H. Fernando
Keyword(s):  
Yellow Perch ◽  
White Perch ◽  
Micropterus Salmoides ◽  
Perca Flavescens ◽  
Lake Ontario ◽  
Smallmouth Bass ◽  
Lepomis Gibbosus ◽  
Experimental Conditions ◽  
Pomoxis Nigromaculatus ◽  
Rock Bass

Analysis of incidence and intensity of infestation of yellow perch, Perca flavescens (Mitchill), by the glochidia of Lampsilis radiata from weekly samples from May to September and single samples in October and November indicate that the two subspecies, Lampsilis radiata radiata and Lampsilis radiata siliquoidea, shed their glochidia in late spring and throughout the summer in the Bay of Quinte, Lake Ontario. Smaller fish are more heavily infested with these glochidia than larger ones. About 50% of the preparasitic glochidia of Lampsilis radiata siliquoidea survived for 12, 70, and 120 h at 20°, 12°, and 10 °C respectively. The parasitic period of the glochidia of L. r. siliquoidea on yellow perch under experimental conditions was 50 days at 15 °C from the May infestation. Yellow perch carried the glochidia for a longer period from an August infestation. All the glochidia recovered 50 days after infestation, both from May and August infestations, had undergone metamorphosis. There was no difference in the degrees of infestation of the different species of fish used in our experiments. Pumpkinseed, Lepomis gibbosus (Linnaeus); rock bass, Ambloplites rupestris (Rafinesque); and white perch, Roccus americanus (Gmelin) lost their infestations in a week. Presumably no metamorphosis took place under these conditions. Black crappie, Pomoxis nigromaculatus (LeSueur); largemouth bass, Micropterus salmoides (Lacepede), smallmouth bass, M. dolomieui Lacepede: and yellow perch carried the infestation till they were killed 20 days later. There was no relationship between the numbers of glochidia (Lampsilis radiata) and copepods, (Ergasilus confusus Bere) on naturally infested yellow perch, nor on rock bass, smallmouth bass, and pumpkinseed which harbored Ergasilus spp. naturally and which were infested with the glochidia of L. r. siliquoidea experimentally.

Response of predatory zooplankton populations to the experimental acidification of Little Rock Lake, Wisconsin

1993 ◽  
Vol 15 (5) ◽  
pp. 553-562 ◽  
Author(s):  
Michael E. Sierszen ◽  
Thomas M. Frost
Keyword(s):  
Little Rock ◽  
Little Rock Lake ◽  
Experimental Acidification ◽  
Rock Lake

Drought-driven lake level decline: effects on coarse woody habitat and fishes

2014 ◽  
Vol 71 (2) ◽  
pp. 315-325 ◽  
Author(s):  
Jereme W. Gaeta ◽  
Greg G. Sass ◽  
Stephen R. Carpenter
Keyword(s):  
Climate Change ◽  
Species Interactions ◽  
Yellow Perch ◽  
Lake Level ◽  
Micropterus Salmoides ◽  
Little Rock ◽  
Littoral Habitat ◽  
Littoral Zones ◽  
Coarse Woody Habitat ◽  
Rock Lake

Research testing for the effects of climate change on lentic fishes has focused on changing thermal and dissolved oxygen regimes, but has often overlooked potential influences of altered lake levels on littoral habitat availability and species interactions. Natural littoral structures such as coarse woody habitat (CWH) can be critical to fishes for prey production, refuge, and spawning. Drought-driven lake level declines may strand these structures above the waterline and thereby remove them from littoral zones. A prolonged drought in northern Wisconsin, USA, allowed us to test for effects of lake level decline on CWH and the response of a fish community. During our study (2001–2009), the lake level of Little Rock Lake South declined over 1.1 m and >75% of the previously submerged CWH was lost from the littoral zone. The loss of CWH coincided with the forage fish species (yellow perch, Perca flavescens) falling below detection and reduced growth of the top piscivore (largemouth bass, Micropterus salmoides). Our study highlights the importance of lake level fluctuations as a mechanism by which climate change may affect aquatic ecosystems and species interactions.

Early zooplankton response to experimental acidification in Little Rock Lake, Wisconsin, USA

1988 ◽  
Vol 23 (4) ◽  
pp. 2279-2285 ◽  
Author(s):  
Thomas M. Frost ◽  
Pamela K. Montz
Keyword(s):  
Little Rock ◽  
Little Rock Lake ◽  
Experimental Acidification ◽  
Rock Lake
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