Ecological Archives E094-204-A2

Annika W. Walters, María de los Ángeles González Sagrario, Daniel E. Schindler. 2013. Species- and community-level responses combine to drive phenology of lake phytoplankton. Ecology 94:2188–2194. http://dx.doi.org/10.1890/13-0445.1

Appendix B. Results for analysis considering alternative grazing metrics.

Table B1. Coefficient and p value for grazing in multiple linear regressions with alternate grazing metrics. Spring estimates just consider data from March–June.

 

Spring grazers

Grazers

Spring Daphnia sp.

Daphnia sp.

Spring Diaptomus sp.

Diaptomus sp.

 Community grouping

coefficient

p value

coefficient

p value

coefficient

p value

coefficient

p value

coefficient

p value

coefficient

p value

All taxa

-0.10

<0.01

-0.08

<0.001

-0.09

<0.01

-0.07

<0.01

-0.15

0.11

-0.04

0.42

All taxa except eutrophication associated taxa

-0.09

<0.01

-0.07

<0.001

-0.08

<0.01

-0.06

<0.01

-0.14

0.10

-0.04

0.40

Continually present taxa

-0.09

<0.01

-0.06

<0.01

-0.08

<0.01

-0.06

<0.01

-0.11

0.21

-0.02

0.67

Table B2. Direction and significance of grazing in phenology multiple linear regressions for spring grazers (Daphnia sp. and Diaptomus sp. abundance estimates summed for March- June) and for spring Daphnia sp. and spring Diaptomus sp. considered separately. All significant relationships are marked with the direction of the relationship (+ or -) and the significance level (*p < 0.05, **p < 0.01, and ***p < 0.001)

Phytoplankton species

Multiple regression - phenology

Spring grazers

Spring Daphnia sp.

Spring Diaptomus sp.

Achnanthes species

     

Anabaena circinalis and flos-aquae

 (-)*

(-)*

 

Anabaena species

 

 

 

Anacystis cyanea

 

 

 

Ankistrodesmus braunii

(+)*

 

(+)*

Ankistrodesmus falcatus

 

 

 

Ankistrodesmus species

 

 

 

Ankistrodesmus spiralis

 

 

 

Ankyra species

 

 

(-)*

Aphanizomenon flos-aquae

 

 

 

Aphanocapsa delicatissima

 

 

 

Aphanocapsa species

 

 

 

Asterionella formosa

 

 

 

Aulacoseira italica v. tenuissima

 

 

 

Aulacoseira subarctica

 

 

 

Botryococcus braunii

 

 

 

Ceratium hirundinella

 

 

 

Chroococcus limneticus

(-)*

(-)*

 

Chroomonas species

 

 

 

Cladomonas species

 

 

 

Closteriopsis species

 

 

 

Closterium species

 

 

 

Coelastrum microporum

 

 

 

Coelosphaerium kutzingianum

 

 

 

Coelosphaerium naegilianum

 

 

 

Coelosphaerium species

 

 

 

Cosmarium species

 

 

 

Crucigenia rectangularis

 

 

 

Cryptomonas marssonii

 

 

 

Cryptomonas species

 

 

 

Cyanomonas species

 

 

 

Cyclotella bodanica

 

 

(-)*

Cyclotella ocellata

 

 

(-)*

Cyclotella pseudostelligera +

 

 

 

Cyclotella species

 

 

 

Cymbella affinis

 

 

 

Cymbella minuta

 

 

 

Cymbella species

 

 

 

Dictyosphaerium ehrenbergianum

 

 

 

Dinobryon species

 

 

 

Elakatothrix species

 

 

 

flagellate

 

 

 

Fragilaria crotonensis

(-)*

(-)*

 

Fragilaria species

 

 

(-)*

Glenodinium species

 

 

 

Gloeocystis  species

 

 

 

Gloeocystis major

 

 

 

Gomphosphaeria species

 

 

 

Gymnodinium species

 

 

 

Kirchneriella obesa

 

 

 

Lyngbya species

 

 

 

Mallomonas akrokomos

 

 

(-)*

Mallomonas pseudocoronata

 

 

 

Mallomonas species

 

 

 

Melosira varians

 

 

 

Microcystis species

 

 

 

Monoraphidium contortum

 

 

 

Monoraphidium species

 

 

 

Navicula species

 

 

(-)*

Nephrocytium species

 

 

 

Nitzschia acicularis

 

 

 

Nitzschia species

 

 

 

Oocystis borgei

 

 

 

Oocystis gigas

 

 

 

Oocystis lacustris

 

 

 

Oocystis parva

 

 

 

Oocystis pusilla

 

 

 

Oocystis solitaria

 

 

 

Oocystis species

 

 

 

Oscillatoria limnetica

(+)*

(+)*

 

Oscillatoria species 1 (rubescens complex)

 

 

 

Pandorina species

 

 

 

Pediastrum species

 

 

 

Peridinium species

 

 

 

Prasinochlamydomonas species

 

 

 

Pseudosphaerocystis lundii

 

 

 

Quadrigula  species

 

 

(-)*

Rhizosolenia eriensis

 

 

 

Rhoicosphenia species

 

 

 

Scenedesmus quadricauda

 

 

 

Schizothrix species

(-)*

 

 

Schroederia species

(-)*

 

 

Sphaerocystis species

 

 

 

Staurastrum paradoxum

 

 

 

Stephanodiscus hantzschii

 

 

 

Stephanodiscus minutulus

 

 

 

Stephanodiscus neoastraea (\astraea\")"

 

 

 

Stephanodiscus niagarae

 

 

 

Stephanodiscus species, small

 

 

 

Synedra acus

 

 

 

Synedra delicatissoma

 

 

 

Synedra radians

 

 

(-)*

Synedra rumpens

 

 

 

Synedra species

 

 

 

Synedra tenera

 

 

 

Synedra ulna

(-)*

(-)*

 

Tabellaria  species

(-)*

(-)*

 

Tetraspora species

   

(-)*

Ulothrix subconstricts

   

(+)*

unicells 1–3 µm

     

unicells 3–6 µm

     

unicells 6–10 µm

     

unicells 10–18 µm

     

unicells >18 µm

 

 

 


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