Lab 5 Completed
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Georgia State University *
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1401L
Subject
Geography
Date
Jun 22, 2024
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docx
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3
Uploaded by hyvoneJackson
Lab 5: Ecosystems: Energy, Patterns, and Disturbance
ENVS 1401L
Name:
_
I.
Our Changing Seasons
Video 1
1.
Humans have relied on phenology since x.
The time of hunters and gathers.
2.
_(x.) _ is causing rhythms of nature to shift.
Increasing global temperature
3.
While the caterpillars have adapted to the earlier leafing out period of the oaks, what species that depend on the caterpillar has not adapted as quickly?
Migrating pied flycatcher Bird
4.
How could blooming trees, now and in the years to come, fool you as to what season it technically is?
By blooming earlier than expected
Video 2
1.
What information does the data gathered by the featured scientist (Liana May) on the phenology of the plants in the preserve offer? (1-2 complete sentences)
It provides insight into the timing of plant life cycle events, such as flowering and fruiting, which can be used to study the impact of climate change on plant populations and ecosystems.
2.
How is a changing climate encouraging some invasive plants? (1-2 complete sentences)
A changing climate may encourage some invasive plants by creating more
favorable conditions for their growth and spread. For example, increased temperatures and changes in precipitation patterns may allow invasive plants to outperform native species and settle in new areas.
II.
Ecosystems and Disturbance
1
Press release
Answer with complete sentences for all questions.
1.
What does this study provide new evidence on?
This study provides new evidence on how rising temperatures may reduce the efficiency of the food chain, especially in aquatic ecosystems. We show that a 4°C increase in temperature may significantly reduce the energy transfer of plankton's food web, cascading into larger animals at the top of the food chain.
2.
What is the significance of this and what other questions remain?
The importance of this study lies in demonstrating a direct link between rising
temperatures and reduced energy transfer in the food chain. 3.
What is the study's major “takeaway” (lesson)?
Rising temperatures can disrupt energy flow through the food chain, reducing efficiency and potentially endangering the survival of larger animals that rely on this energy transfer.
4.
Was this study conducted with environmental (real-world) or controlled (lab/ experimental) samples?
The study was conducted using environmental samples. The researchers measured the nitrogen transfer efficiency of freshwater plankton exposed to a seven-year outdoor warming experiment in the U.K.
Article Title of article: Blue Carbon from the Past Forecasts the Future
Year of publication:
2020
Journal name:
Science.
Questions
Section of
article
Your Answer (in complete sentences)
2
Who?
Who did this research?
Was
it a single author or many
authors from many
institutions? Have any of
these authors published on a
similar topic before? Author
Information,
References
Catherine E. Lovelock
What?
What are the main findings
of the article? Results,
Figures
The article discusses the importance of sea level
rise (SLR) thresholds for mangrove survival. We
find that mangrove ecosystems have a critical SLR
of 6 to 7 mm/year, and above that are at risk. The
global average SLR is currently 3.4 mm/year, but
under current emission scenarios, it can reach 10
mm/year by 2100. Reducing CO2 emissions,
managing river flow, and limiting water and oil
extraction are key to protecting mangroves
Why?
Why is this topic significant?
Why was the research
conducted?
Introduction,
Conclusion
The study of sea level rise (SLR) thresholds in
mangrove ecosystems is important because of their
ecological importance, ecosystem service
provision, and role in climate change mitigation.
This study aimed to determine SLR thresholds for
mangrove survival to inform conservation and
management strategies in the face of climate
change.
How?
How was this study
conducted? Was it done in a
controlled/ experimental
setting or were real-world
samples collected from the
natural environment? What
equipment/ instruments were
involved? Do the methods
seem complex?
Materials &
Methods
The study was conducted using real-world samples
collected from natural environments, especially
ancient mangrove sediments. The researchers
analyzed sediment cores in 78 areas on five
continents to compare the dates when mangrove
vegetation first appeared over the past 10,000
years. This information was used to infer
thresholds for relative sea level rise (SLR) for
mangrove resistance. Equipment and tools
involved in the study would have included coring
equipment for extracting sediment cores from
mangrove areas and laboratory equipment for
analyzing cores. Techniques such as radiocarbon
dating, and sediment analysis would have been
used to determine the age of sediments and to
confirm the presence of mangrove vegetation.
3
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