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population targets

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Journal Article
Aquatic Ecosystem Health & Management (2016) 19 (2): 192–205.
Published: 02 April 2016
... Herring Gulls (200–300 nests) are within population targets set out in the Hamilton Harbour Remedial Action Plan. Despite conservation efforts, Common Terns ( Sterna hirundo ) declined from a peak of 1,028 nests (1990) to 333 nests (2013), although currently within the population target (300–600 nests...
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2017) 20 (3): 242–251.
Published: 03 July 2017
...J. N. Bowlby; J. A. Hoyle Restoration targets for nearshore fish populations in Hamilton Harbour and Toronto Harbour–Areas of Concern–were developed. Fish were captured in trap nets at Hamilton Harbour, Toronto Harbour, and nine unimpaired embayments of Lake Ontario. Embayments were sampled at...
Journal Article
Aquatic Ecosystem Health & Management (2012) 15 (4): 464–472.
Published: 01 December 2012
... to achieve mass-balance. This bottom-up control met the nutrient (total phosphorus), fish, benthic invertebrates, and phytoplankton population RAP targets. Based on these consistent results, it is recommended that future modelling efforts examine the effects of further phytoplankton biomass...
Journal Article
Aquatic Ecosystem Health & Management (2001) 4 (1): 115–122.
Published: 01 April 2001
... 119Zarull and Hartig / Aquatic Ecosystem Health and Management 4(2001) 115-122 substances and so on), ii) rehabilitate and create suit- able habitat, and iii) restructure existing populations. Independent objectives and numerical targets were es- tablished for fish and wildlife. In the case of wildlife in...
Journal Article
Aquatic Ecosystem Health & Management (2004) 7 (1): 15–30.
Published: 01 January 2004
... protocol for defining and evaluating phytoplankton community rehabilitation targets. Bowland Lake was experimentally neutralized in 1983 to evaluate the efficacy of an application of a powdered limestone slurry for rehabilitating biological communities in the lake. The Bay of Quinte was identified by the...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 434–442.
Published: 28 November 2007
... to be herbivorous, feeding mostly on algae, has diversified its diet to include insects, fish, algae and plant materials, all being important food items. The changes in population characteristics and diet of O. niloticus are discussed in context of changes occurring in the lake and its surroundings...
Image
Published: 02 April 2016
Figure 2. Population trends of colonial waterbirds nesting in Hamilton Harbour. Long-term (1975–2013) trends are indicated by a dashed grey line; short-term (2001–2013) trends are indicated by a solid black line (see Table S2 for model statistics and parameter estimates). 2013 population More
Journal Article
Aquatic Ecosystem Health & Management (2014) 17 (2): 107–114.
Published: 03 April 2014
..., targets for environmental restoration are often based on population parameters (e.g. abundance, growth) for species that are sensitive to both water quality and physical habitat factors. Smallmouth Bass ( Micropterus dolomieu) is native to and ubiquitous throughout the upper midwest United States...
Journal Article
Aquatic Ecosystem Health & Management (2004) 7 (4): 507–513.
Published: 01 October 2004
... adults in late spring-early summer. These larger nymphs were targeted for sampling because most of the nymphal biomass occurs in this population segment. In the laboratory, each nymph was measured (total length from the anterior tip of the rostrum to the base of the caudal filaments) to the nearest...
Journal Article
Aquatic Ecosystem Health & Management (2009) 12 (1): 2–10.
Published: 09 March 2009
...Thomas F. Nalepa; Steven A. Pothoven; David L. Fanslow Surveys of the benthic macroinvertebrate community were conducted in the main basin of Lake Huron in 2000 and 2003, and corresponding studies of lake whitefish diets were conducted in 2002-2004. Populations of three major benthic taxa, Diporeia...
Journal Article
Aquatic Ecosystem Health & Management (2016) 19 (4): 401–410.
Published: 01 October 2016
... © 2016 AEHMS 2016 copepod diversity zooplankton ecology density development stage Lake Tanganyika is remarkable in its large biodiversity and high fish production (Mannini, 1999 ; Phiri and Shirakihara, 1999 ). Commercial fisheries mainly target two pelagic clupeids, Stolothrissa...
Journal Article
Aquatic Ecosystem Health & Management (2012) 15 (3): 253–259.
Published: 01 July 2012
... ecological communities and provide the desired beneficial actions, have to be selected and produced at a cost that is acceptable to the end users. The microbes have to be added at a high enough population density to compete with the natural flora in the treatment sites. Bacteria that carry genes for...
Journal Article
Aquatic Ecosystem Health & Management (2001) 4 (3): 235–242.
Published: 01 September 2001
...Arthur H. Mitchell Abstract Proper management and protection of tropical aquatic ecosystems, or wetlands, are essential for a healthy environment and for the sustainability of resources required by a growing human population. The definition of wetlands, as accepted by the Ramsar Convention and...
Journal Article
Aquatic Ecosystem Health & Management (2008) 11 (3): 298–309.
Published: 25 August 2008
... limited recreational or fisheries value. Recently, they are often inhabited by healthy fish populations. On the other hand, there are many highly eutrophic lakes in agricultural areas of southern and western Finland and Sweden that regularly suffer from algal blooms and high biomasses of cyprinid fish...
Journal Article
Aquatic Ecosystem Health & Management (2019) 22 (4): 440–451.
Published: 02 October 2019
...John A. Darling Environmental DNA is one of the most promising new tools in the aquatic biodiversity monitoring toolkit, with particular appeal for applications requiring assessment of target taxa at very low population densities. And yet there persists considerable anxiety within the management...
Journal Article
Aquatic Ecosystem Health & Management (2018) 21 (3): 352–361.
Published: 03 July 2018
... gaps, and made recommendations for future monitoring. This approach will assist with delisting Beneficial Use Impairments #14 Loss of Fish and Wildlife Habitat and #3 Degradation of Fish and Wildlife Populations within the Toronto Remedial Action Plan area. Further, the Integrated Restoration...
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2011) 14 (1): 94–103.
Published: 28 February 2011
...Diana Macecek; Greg P. Grabas In most Canadian Areas of Concern, fish and wildlife populations and their habitats (i.e. Beneficial Use Impairments 3 and 14) have been listed as impaired. While much work has addressed other Beneficial Use Impairments, there has often been a lack of specific data and...
Journal Article
Aquatic Ecosystem Health & Management (2004) 7 (1): 137–146.
Published: 01 January 2004
... species sensitivity. Atrazine effects were examined at the population (cell density, primary productivity and biomass), cellular (biovolume), and subcellular (pigment composition, protein concentration and lipid concentration) levels. Atrazine significantly decreased cell density, productivity rate...
Journal Article
Aquatic Ecosystem Health & Management (2010) 13 (2): 135–142.
Published: 28 May 2010
...Kevin J. Hedges; Marten A. Koops; Nicholas E. Mandrak; Ora E. Johannsson There is considerable variation in the strategies used to manage large lakes. Management targets and resources for monitoring, assessment, planning and enforcement (e.g. personnel, equipment, policy, legislation) can differ...
Journal Article
Aquatic Ecosystem Health & Management (2010) 13 (1): 11–19.
Published: 26 February 2010
... focuses mainly on two cichlids ( Oreochromis niloticus and Astatotilapia burtoni ) and the marbled lungfish ( Protopterus aethiopicus ). Studies of population structure were based on length-frequency distributions of fish in catch samples. The size at first maturation was estimated using total length and...