Chironomid Autoecology of the Past and Present, and a Causal Analysis of Recreational Shoreline Developments on Hypolimnetic Oxygen in Algonquin Park Lakes

Simple item page
dc.contributor.advisorSharma, Sapna
dc.contributor.authorCarew, Cait Raylene-Alice
dc.date.accessioned2020-08-11T12:47:42Z
dc.date.available2020-08-11T12:47:42Z
dc.date.copyright2020-03
dc.date.issued2020-08-11
dc.date.updated2020-08-11T12:47:42Z
dc.degree.disciplineBiology
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractRecreational cottages continue to be leased within Algonquin Park despite inadequate assessments of cottage impacts on lake water quality and ecosystem integrity. Cottages can increase phosphorus export to lakes, resulting in increased productivity and declines in hypolimnetic oxygen. Algonquin Park lakes contain dense populations of lake trout (Salvelinus namaycush) and brook trout (Salvelinus fontinalis), which are sensitive to declining hypolimnetic oxygen. Dipteran subfossil remains were used to calibrate a VWHO inference model (RMSEP = 1.7 mg O2 L-1) to determine baseline VWHO (historical, pre-European settlement, < ca. 1850 CE) and assess VWHO change since then using a top-bottom paleolimnological approach. Despite increased anthropogenic activity in the park, inferred VWHO did not change predictably since circa 1850. We did not detect a significant effect of cottages on VWHO. However, regional declines in phosphorus export may be responsible for muting the effects of anthropogenic phosphorus inputs on VWHO in Algonquin Park lakes.
dc.identifier.urihttp://hdl.handle.net/10315/37735
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectFisheries and aquatic sciences
dc.subject.keywordsBiology
dc.subject.keywordsPaleolimnology
dc.subject.keywordsLimnology
dc.subject.keywordsChironomid
dc.subject.keywordsChaoborid
dc.subject.keywordsDipteran ecology
dc.subject.keywordsEcology
dc.subject.keywordsAquatic science
dc.subject.keywordsAquatic biology
dc.subject.keywordsAquatic ecology
dc.subject.keywordsLake trout
dc.subject.keywordsBrook trout
dc.subject.keywordsAlgonquin Park
dc.subject.keywordsLakes
dc.subject.keywordsTop-bottom approach
dc.subject.keywordsHypolimnetic oxygen
dc.subject.keywordsVWHO
dc.subject.keywordsVolume-weighted hypolimnetic oxygen
dc.subject.keywordsMuskoka-Haliburton
dc.subject.keywordsSouth-central Ontario
dc.subject.keywordsCottages
dc.subject.keywordsLake oxygen
dc.subject.keywordsPrivate cottages
dc.subject.keywordsMultiple stressors
dc.subject.keywordsPhosphorus
dc.subject.keywordsFish ecology
dc.subject.keywordsPaleoindicators
dc.subject.keywordsCausal inference
dc.subject.keywordsCausal diagrams
dc.subject.keywordseHOF
dc.subject.keywordsPaleoecology
dc.subject.keywordsAutoecology
dc.titleChironomid Autoecology of the Past and Present, and a Causal Analysis of Recreational Shoreline Developments on Hypolimnetic Oxygen in Algonquin Park Lakes
dc.typeElectronic Thesis or Dissertation

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Carew_Cait_2020_MSc.pdf
Size:
3.32 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Name:
license.txt
Size:
1.83 KB
Format:
Plain Text
Description:
Download
No Thumbnail Available
Name:
YorkU_ETDlicense.txt
Size:
3.36 KB
Format:
Plain Text
Description:
Download

Collections

Biology

All items in the YorkSpace institutional repository are protected by copyright, with all rights reserved except where explicitly noted.