Ecological Archives E088-065-A3

Jamie R. Crait and Merav Ben-David. 2007. Effects of river otter activity on terrestrial plants in trophically altered Yellowstone Lake. Ecology 88:1040–1052.

Appendix C. Tables showing (1) plant genera and (2) plant species identified on latrine sites and non-latrine sites on Yellowstone Lake and tributary streams; and (3) number of occurrences of selected plant genera on latrine and non-latrine sites, including only those genera with statistically significant or marginally significant P values at α = 0.05 (Fisher exact test).

TABLE C1. Plant genera identified on latrine sites and non-latrine sites on Yellowstone Lake and tributary streams, 25 June to 1 August 2003. The symbol (n) represents the number of occurrences for each genus out of 66 latrine sites and 86 non-latrine sites.

                     
Latrine
n
 
Latrine
n
 
Non-latrine
n
 
Non-latrine
n
Abies sp. 21   Lupinus sp. 23   Abies sp. 16   Maianthemum sp. 4
Achillea sp. 32   Maianthemum sp. 6   Achillea sp. 44   Mentha sp. 15
Aconitum sp. 3   Mentha sp. 17   Aconitum sp. 2   Mertensia sp. 9
Actaea sp. 8   Mertensia sp. 13   Actaea sp. 3   Mimulus sp. 4
Allium sp. 2   Mimulus sp. 2   Allium sp. 3   Pedicularis sp. 1
Alnus sp. 12   Osmorhiza sp. 2   Alnus sp. 9   Penstemon sp. 4
Antennaria sp. 17   Penstemon sp. 5   Anaphalis sp. 1   Pentaphylloides sp. 1
Aquilegia sp. 2   Phacelia sp. 3   Angelica sp. 1   Phacelia sp. 10
Arctostaphylos sp. 5   Phlox sp. 2   Antennaria sp. 20   Phlox sp. 2
Argentina sp. 3   Picea sp. 35   Aquilegia sp. 6   Picea sp. 27
Arnica sp. 26   Pinus sp. 62   Arctostaphylos sp. 9   Pinus sp. 68
Artemisia sp. 15   Platanthera sp. 3   Argentina sp. 8   Plantago sp. 2
Astragalus sp. 7   Polemonium sp. 5   Arnica sp. 27   Platanthera sp. 1
Balsamorhiza sp. 1   Populus sp. 2   Artemisia sp. 21   Polemonium sp. 8
Carduus sp. 1   Potentilla sp. 23   Astragalus sp. 14   Polygonum sp. 2
Carex sp. 47   Prosartes sp. 1   Brassica sp. 1   Populus sp. 4
Castilleja sp. 7   Prunus sp. 1   Carduus sp. 3   Potentilla sp. 25
Cerastium sp. 1   Pseudotsuga sp. 3   Carex sp. 52   Prunella sp. 2
Chamerion sp. 42   Pyrola sp. 6   Castilleja sp. 9   Pseudotsuga sp. 1
Cirsium sp. 10   Ranunculus sp. 1   Cerastium sp. 1   Pyrola sp. 8
Collomia sp. 2   Ribes sp. 16   Chamerion sp. 39   Pyrrocoma sp. 2
Crepis sp. 2   Rorippa sp. 2   Chrysothamnus sp. 1   Ranunculus sp. 2
Cystopteris sp. 4   Rosa sp. 1   Cirsium sp. 15   Ribes sp. 12
Delphinium sp. 1   Rubus sp. 5   Collomia sp. 4   Rorippa sp. 1
Descurainia sp. 1   Rumex sp. 1   Cystopteris sp. 2   Rosa sp. 5
Epilobium sp. 25   Salix sp. 8   Delphinium sp. 1   Rubus sp. 3
Equisetum sp. 30   Saxifraga sp. 2   Descurainia sp. 1   Rumex sp. 3
Eriophyllum sp. 1   Sedum sp. 5   Epilobium sp. 27   Salix sp. 12
Fragaria sp. 37   Senecio sp. 4   Equisetum sp. 26   Sambucus sp. 1
Frasera sp. 2   Stellaria sp. 3   Ericameria sp. 2   Saxifraga sp. 5
Galium sp. 6   Streptopus sp. 3   Eriophyllum sp. 1   Sedum sp. 8
Gayophytum sp. 1   Symphoricarpos sp. 6   Fragaria sp. 49   Senecio sp. 11
Geranium sp. 12   Symphyotrichum sp. 24   Frasera sp. 1   Shepherdia sp. 8
Geum sp. 5   Taraxacum sp. 22   Galium sp. 3   Solidago sp. 2
Hedysarum sp. 4   Thalictrum sp. 2   Gayophytum sp. 1   Streptopus sp. 1
Heracleum sp. 4   Trifolium sp. 7   Gentianopsis sp. 2   Symphoricarpos sp. 5
Juncus sp. 2   Urtica sp. 1   Geranium sp. 14   Symphyotrichum sp. 39
Juniperus sp. 13   Vaccinium sp. 23   Geum sp. 7   Taraxacum sp. 34
Ledum sp. 1   Valeriana sp. 1   Hedysarum sp. 10   Thalictrum sp. 9
Lepidium sp. 1   Veronica sp. 2   Heracleum sp. 4   Tragopogon sp. 1
Linnaea sp. 1   Viguiera sp. 1   Juniperus sp. 14   Trifolium sp. 10
Lonicera sp. 4   Viola sp. 3   Ledum sp. 2   Vaccinium sp. 11
      unknown 19   Ligusticum sp. 1   Veronica sp. 2
            Lonicera sp. 8   Viguiera sp. 1
            Lupinus sp. 33   Xerophyllum sp. 1
                  unknown 16

 

TABLE C2. Plant species identified on latrine sites and non-latrine sites on Yellowstone Lake and tributary streams, 25 June to 1 August 2003. The symbol (n) represents the number of occurrences for each genus out of 66 latrine sites and 86 non-latrine sites.

                     
Latrine
n
 
Latrine
n
 
Non-latrine
n
 
Non-latrine
n
Abies lasiocarpa 25   Lonicera utahensis 3   Abies lasiocarpa 16   Lupinus argenteus 33
Achillea millefolium 40   Lupinus argenteus 29   Achillea millefolium 44   Mentha arvensis 15
Aconitum columbianum 7   Mentha arvensis 23   Aconitum columbianum 2   Mertensia ciliata 1
Actaea rubra 10   Mertensia alpina 1   Actaea rubra 3   Mimulus guttatus 3
Alnus incana 13   Mertensia ciliata 4   Alnus incana 9   Mimulus lewisii 1
Arctostaphylos uva-ursi 5   Mimulus guttatus 2   Anaphalis margaritacea 1   Penstemon procerus 2
Argentina anserina 4   Packera pseudaurea 1   Antennaria pulcherrima 1   Penstemon rydbergii 1
Arnica cordifolia 7   Pedicularis racemosa 1   Aquilegia flavescens 1   Pentaphylloides floribunda 1
Arnica longifolia 2   Penstemon montanus 1   Arctostaphylos uva-ursi 9   Phacelia hastata 5
Artemisia cana 10   Penstemon rydbergii 1   Argentina anserina 8   Phacelia sericea 1
Artemisia tridentata 6   Phacelia franklinii 1   Arnica cordifolia 4   Picea engelmannii 27
Balsamorhiza sagittata 1   Phacelia hastata 2   Arnica longifolia 7   Pinus contorta 53
Carduus nutans 1   Picea engelmannii 43   Artemisia cana 10   Pinus flexilis 15
Cerastium arvense 1   Picea pungens 2   Artemisia tridentata 11   Platanthera stricta 1
Chamerion angustifolium 54   Pinus contorta 62   Brassica rapa 1   Polygonum aviculare 2
Cicuta maculata 1   Pinus flexilis 17   Carduus nutans 3   Populus angustifolia 2
Cirsium scariosum 1   Platanthera stricta 4   Cerastium arvense 1   Populus tremuloides 2
Collomia linearis 2   Populus tremuloides 2   Chamerion angustifolium 39   Potentilla diversifolia 10
Cystopteris fragilis 6   Potentilla diversifolia 9   Chrysothamnus viscidiflorus 1   Potentilla gracilis 1
Descurainia sophia 1   Potentilla norvegica 2   Cirsium scariosum 1   Potentilla norvegica 2
Epilobium ciliatum 36   Prosartes trachycarpa 1   Collomia linearis 1   Prunella vulgaris 2
Eriophyllum lanatum 1   Prunus virginiana 1   Cystopteris fragilis 2   Pseudotsuga menziesii 1
Frasera speciosa 2   Pseudotsuga menziesii 3   Descurainia sophia 1   Ranunculus eschscholtzii 1
Galium trifidum 2   Pyrola asarifolia 2   Epilobium ciliatum 27   Rumex acetosella 1
Gayophytum ramosissimum 1   Ranunculus acris 1   Ericameria discoidea 2   Rumex salicifolius 2
Gentianopsis detonsa 3   Sambucus racemosa 1   Eriophyllum lanatum 1   Sambucus racemosa 1
Geranium richardsonii 16   Sedum lanceolatum 3   Frasera speciosa 1   Senecio integerrimus 1
Geum macrophyllum 10   Senecio triangularis 12   Gayophytum ramosissimum 1   Senecio triangularis 6
Geum triflorum 1   Stellaria borealis 1   Gentianopsis detonsa 2   Shepherdia canadensis 8
Heracleum sphondylium 5   Streptopus amplexifolius 4   Geranium richardsonii 5   Streptopus amplexifolius 1
Juniperus communis 16   Symphoricarpos oreophilus 8   Geum macrophyllum 7   Symphoricarpos oreophilus 5
Ledum glandulosum 1   Thalictrum occidentale 2   Heracleum sphondylium 4   Symphyotrichum foliaceum 2
Lepidium densiflorum 1   Urtica dioica 1   Juniperus communis 14   Thalictrum occidentale 1
Linnaea borealis 1   Vaccinium scoparium 30   Ledum glandulosum 2   Tragopogon dubius 1
Lonicera involucrata 4   Viguiera multiflora 1   Ligusticum filicinum 1   Vaccinium scoparium 11
            Lonicera involucrata 6   Viguiera multiflora 1
            Lonicera utahensis 2   Xerophyllum tenax 1

 

TABLE C3. Number of occurrences of selected plant genera on latrine (n = 66) and non-latrine (n = 84) sites on Yellowstone Lake and tributary streams, summer 2003. List includes only those genera with statistically significant or marginally significant P values at α = 0.05 (Fisher exact test). Pairwise comparisons were made between n = 84 genera on latrines and n = 90 genera on non-latrines. Refer to Table C1 for list of genera.

 

Number of Occurrences

 

Genus

Latrine

Non-latrine

P value

Actaea sp.

10

3

0.04

Chamerion sp.

54

39

0.02

Equisetum sp.

42

26

0.01

Picea sp.

43

27

0.01

Ribes sp.

21

12

0.06

Shepherdia sp.

0

8

0.00

Vaccinium sp.

30

11

0.00



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