Home > Uncategorized > Third day at QUBS – August 17th

Third day at QUBS – August 17th

Today’s blog is brought to you by Team Loon

We began our day at QUBS with a breakfast of scrambled eggs and potatoes. We just want to make a note that our team is thoroughly enjoying the food here at QUBS and want to give a special thank you shout out to the staff here.

Dale Kristensen discussing wetlands.

This morning we had a lecture and nature walk with Dale Kristensen. The lecture was called “A brief introduction to freshwater wetland ecology.” It began by explaining that wetlands are “Permanently or seasonally flooded ecosystems dominated by hydrophytic vegetation.” The lectured continued to give us examples of organisms in the surrounding wetlands such as bull frogs, redwinged blackbirds, beavers and moose.

We also discovered the vast importance of wetlands, and an interesting fact is that Hurricane Katrina wouldn’t have been so devastating to the metropolitan areas if the surrounding wetlands had been preserved. This is because wetlands aid with flood control by collecting water and then releasing it at a slower rate.

During the nature walk portion of the trip we learnt about cattail, purple loosestrife, and other vegetation. During the walk we saw just how extensive the coverage of invasive species was. One way to battle invasive species is to use biocontrol. A real example is the beetle that was brought in to control the purple loosestrife population. Although it seems to be working, it was an extremely risky move because bringing in one foreign species to control another could have other unknown effects on the ecosystem.

Team Loon fishing.

After lunch we went to two lakes to do fish analysis.  The first lake we went to is Keast Bay where some of the species that first three groups found were: yellow perch, sunfish, rock bass, log perch, darters, banded jellyfish, largemouth bass, and blue gill.  In the second lake team loon caught the most fish with 156 out of the last three groups.  The most prevalent fish were pumpkins seed sunfish, rock bass and the most was bluegill.  Bluegill (Lepomis macrochirnus) is a freshwater species and is a member of the sunfish family (Centrarchidae) of order Perciformes.  Its notable feature comes from the blue-black gill cover called the opercular flap but the name comes from the bright blue gill rakers.  The bluegill can interbreed with the closely related pumpkinseed sunfish
Before dinner some groups were able to enjoy some canoeing. After dinner we had three student seminars titled “West Coast Watershed of Canada” “Environmental Impact of Endocrine Disrupting Compounds: An Overview of the Socio-economic and Regulatory factors surrounding Wastewater Treatment Systems” and “Oil Contamination in Canada and Beyond.” We ended our night with owl calling. We used the “Barred Owl” call, but to our disappointment, we did not see or hear any owls tonight. Hopefully tomorrow we will have better luck!

Fish net demonstration.

今天又是阳光明媚的一天~一如既往的土豆加鸡蛋的早餐之后,我们开始了一天的学习。我们先观看了一部关于三峡大坝工程的纪录片,由此回顾了一下我们的三峡之行。紧接着我们听了Dale Kristensen教授关于淡水湿地生态的讲座,然后我们在生物考察站附近的湿地实地学习了讲座中的内容,湿地里一片片的植物让我们心旷神怡,同时我们还了解到两种加拿大的入侵植物,水鳖和千屈菜(这两种在中国都是乡土种)。生物入侵如今已是全球化的问题,不仅是入侵植物,外来的真菌和昆虫对加拿大本土的梣树和核桃树也造成了致命的打击。然而至今仍缺乏有效的方法治理生物入侵。



A successful catch!


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