Diario de esther18

As the fourth place of the field trip, I went to Marsh Park which was part of LA river. I could found eleven species: Black willow, Giant cane, Rough cocklebur, Smartweeds, Texas ash, mulberries, morning glory, coffeeberry, panic grasses, mustards and prostrate pigweed. Native plants were Balck willow, Rough cocklebur, Smartweeds, Panicgrasses, coffeeberry, and prostrate pigweed. Non-native plants were the Giant cane, Texas Ash, Mulberries, Morning glory, and mustards. Similar with Steelhead Park, Black willow had the most population compared to the others. Giant cane had more population secondly than other plants. This location had the least diversity compared to the different sites: JPL bridge, Lower Arroyo Park, and Steelhead Park.

As the third field trip place, my biology class went to Steelhead Park where included part of LA river. I could find that all of the trees lined up in a row between the river and the steep concrete slope. There were coast live oak, mule fat, black willow, victorian box, giant cane, rough cocklebur, Melia azedarach, fan palms, date palms, smartweeds, hickory, Texas ash, and one unknown non-native plant. According to the research, native plants were Coast Live Oak, Mule Fat, Black Willow, Rough cocklebur, Fan palms, Date Palms, Smartweeds, and Hickory. Non-native plants were the Victorian box, Giant Cane, Melia azedarach, and Texas Ash. Like other location, the native plant had more amount of species than non-native plants. Especially, Black Willow had the most massive amount of species overwhelmingly than other plant species. The species that had the second more massive amount of species was Giant Cane.

Lower Arroyo park was the second field trip place and showed the most diversity of plants compared to plants live in the other area of LA river. From chemistry sampling team data, I could know that soil and water from Lower Arroyo Park contained a lot of nutrients such as phosphate and nitrate. Specifically, those were a good nutrient for plants. I could found sycamore, arroyo willow, pine, elderberry, coast live oak, Englemann oak, sandbar willow, laurel sumac, toyon, native grape, mule fat, holly leaf cherry, mugwort, black willow, eucalyptus, victorian box and three unknown non-native plants. Sycamore, Coast Live Oak, Englemann Oak, Sandbar Willow, Laurel Sumac, Toyon, Mule Fat, Holly Leaf Cherry, Mugwort, and Black Willow were native plants. Arroyo Willow, Pine, Elderberry, Native grape, Box elder, Eucalyptus, and Victorian Box were non-native plants. Overall, native plants had more diversities than non-native plants.

As the first place of field trip from biology class, I went to JPL bridge. Since it was late summer, there was a very narrow stream of LA river. However, there was much diversity of plants, and they could fall into two groups: native and non-native plants. From JPL bridge, I found tag alder, poison oak, blackberry, sycamore, arroyo willow, pine, elderberry, coast live oak and holly leaf cherry. Tag alder had the most diversity in this area which was a native plant. Sycamore, black willow, and holly leaf cherry were native plants as well. However, arroyo willow, pine, elderberry, Atlantic poison oak, and blackberry were non-native plants. Even though there were more species of non-native plants, there were more diversity of native plants; especially there were lots of Tag Alder.