群集, 生態 and 生態系: communities, behavior and ecosystems
Compare 群集, 生態 and 生態系 in tidal-flat, forest and wetland examples. Identify the community, behavior or ecology, and ecosystem being studied or protected.
群集 as an observable or studied community
群集 (ぐんしゅう) means community or assemblage. 「干潟では多様な生物の群集が観察できる。」 means “Communities of diverse organisms can be observed on the tidal flat.” 観察できる expresses what can be observed, not a completed investigation.
「研究者は森に生える植物の群集を調査した。」 means “The researcher studied the plant community growing in the forest.” This reports a researcher studying a plant community. The plant object also prevents an animals-only reading of 群集.
生態 as behavior or ecology
生態 (せいたい) means ecology or behavior. 「研究班は森に暮らす動物の生態を調べた。」 means “The research team studied the behavior of animals living in the forest.” The subject studied is the behavior of animals living in the forest.
「展示では深海魚の不思議な生態が紹介されている。」 means “The exhibit introduces the mysterious ecology of deep-sea fish.” The exhibit introduces deep-sea fish ecology. Neither use changes 生態 into a numerical count of organisms or a measurement of habitat area.
生態系 as an ecosystem to protect
生態系 (せいたいけい) means ecosystem. 「湿地の生態系を守る活動に参加した。」 means “I participated in an effort to protect the wetland ecosystem.” It reports participation in an effort, without reporting that ecosystem protection succeeded.
「一つの変化が生態系全体に影響を与えることがある。」 means “One change can affect an entire ecosystem.” The possibility of an effect on the whole ecosystem does not establish a certain result of every change or supply particular damage or policy judgments.
What is the focus of the objects in 植物の群集, 動物の生態 and 湿地の生態系?
Show the answer and why
They name a plant community, animal behavior or ecology, and a wetland ecosystem respectively. Do not merge them into a group of same-species animals or an organism count. The tidal-flat community being observable also differs from the reported past study of a forest plant community.