Bio 201 F11 Lect 16 (True) v2r

Bio 201 F11 Lect 16 (True) v2r -...

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Biology in the News [see folder on BB] Why are some plant species very successful at invading new geographical areas (e.g. North America from Asia) than others One previous [email protected] is that they are very successful at quickly becoming more abundant than [email protected] species soon aDer an invasion A global [email protected] of biologists called the Nutrient Network tested this [email protected] in Feld experiments and [email protected] around the world They found that invasive plant species did not generally succeed at becoming more abundant in the invaded areas compared to their [email protected] areas Instead, their abundance was generally the same as it was in their [email protected] area, which was not predicted This model of [email protected] [email protected] research, which involved establishing standard experimental designs, is quite novel and an important model for future research on a number of global biological [email protected] hJp://www.nsf.gov/news/news_summ.jsp? mc_ev=click
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announcements Safa’s new office hours: Fri 2‐3 next lecture: Prof. Lowry – Behavioral Ecology
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Anthozoan (coral) Calcium Carbonate (CaCO 3 ) structures are the major structural components of coral reefs most current reefs: 5,000‐1,0000 yrs old Create habitat for a huge diversity of species Threatened by many human [email protected]@es
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Protostomes
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Lophotrochozoans and Ecdysozoans These monophyle)c groups emerged from DNA evidence in the last two decades Previously, morphological traits were thought to mark [email protected] Coelom [email protected] Presence of [email protected] [email protected] in annelid worms was thought to be homologous to [email protected] in arthropods annelids are lophotrochozoans, arthropods are ecdysozoans
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Ecdysozoans LIFE 9 th ed. Fig 21.1
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increase in body size through mol)ng (shedding the [email protected] and [email protected] a new one), which is regulated by the hormone 20‐hydroxyecdysone nematode life cycle; Each larval (L) stage goes through a round of molting . Molting in a
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Bio 201 F11 Lect 16 (True) v2r -...

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