Plankton as Bioindicators in Lakes: 2025 Zoology Thesis Excerpt
Introduction:
An introduction to topic “Plankton as Bioindicators in Lakes” Microscopic organisms like phytoplankton and zooplankton play a vital role in aquatic ecosystems and act as sensitive indicators of water quality. This excerpt from a 2025 zoology thesis reveals how plankton diversity responds to seasonal and chemical variations, offering insights into pollution levels and ecological health of Indian freshwater bodies.
Table of Contents
Excerpt Section:
“Phytoplankton are microscopic, free-living, free-floating autotrophic organism and play a vital role in the aquatic ecosystem as they help to provide energy for the ecosystem, The first organisms in an aquatic habitat are phytoplankton.”
“According to Pandey et al. (2004), phytoplankton is an important part of aquatic flora and helps to keep the biotic and abiotic elements of an aquatic environment in equilibrium.
The tiny, unicellular, floating, colonial, autotrophic organisms known as phytoplankton are found in aquatic environments, and water currents largely regulate their migration (Millman et al., 2005).”
“Phytoplankton showed considerable fluctuation with physicochemical parameters of water quality. Cyanophyceae and Chlorophyceae are dominant over Desmidiaceae and euglenophyceae (Pawar and Sonawane, 2011).”
“Many researchers investigated phytoplankton from various regions of India. (Telkhade et al., 2008; Mishra et al., 2011; Sarwade and Kamble, 2014; Jitesh and Radhakrishnan, 2015).”
“According to Yu et al. (2012), Cao et al. (2018), Nankabirwa et al. (2019) and Zhang et al. (2020), studies on seasonal phytoplankton succession offer vital information about the dynamics of the ecosystem, including changes in biomass, cell density, species composition, and spatial distribution.”
“It has been established that phytoplankton serves as a key indicator of the way landscape usage affects the ecological integrity of lakes in urban areas (Kakoui et.al., 2021).”
“Zooplankton are considered as micro vital invertebrate of the aquatic ecosystem that play an important role between producer and consumer.
The biotic element known as zooplankton is responsible for determining the functional characteristics of aquatic ecosystems, including the nutrient cycle, food web, and food chain.”
“Hence, the study of zooplankton become a point of attraction for ecologists. Hutchinson (1959) discussed the reason behind the diversity and richness of the zooplankton population.”
“Freshwater zooplankton are classified as, Cladocera, Copepoda, Rotifera, and Ostracoda. Microcrustacean, Cladoceraans are commonly known as ‘water fleas’. Another crustacean zooplankton is Copepoda.
It belongs to the phylum Arthropoda. Copepoda can exist in stagnant aquatic environments. But they are unable to survive in polluted environments and gradually disappear (Das et al., 1996).”
“Rotifera is an important planktonic group of organisms in the aquatic environment. They possess different morphological features and high richness and studies have been done to understand their community structure (Sharma and Sharma, 2005).”
Source Citation:
- Thesis title: Seasonal Variations in Hydrological Parameters and Status of Fish Diversity in Bichnaiyya Lake Wetland of District Basti UP India
- University and Department: Siddharth University, Department of Zoology
- Year of submission: 2025
- Page number: Pages 15–16
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