#density series idea notes

Concepts

Do native species density trials at two scale – micro and mesoscale using pots and large plastic buckets. Mix of potting soil and sand best – 50:50.

Consider intra and interspecific competition series – with replacement, i.e. keep net densities per pot consistent.  Finally, perhaps consider competition with an exotic such as red brome.

Designs
with and without shade mimic in greenhouse
umbrella over buckets in mesocosm experiment
natives against brome in density series

Natives

a

b

c

then a*b, a*c, b*c

Or run each out in solo then against red brome.

 

Round 1.
a vs rb
b vs rb
c vs rb
at 1,2, 5, 10, 25 seeds etc or a simple with-replacement density series.
THEN, ready for it…. red brome from cali and red brome from Israel
Round 2. 
a+b vs rb
etc.

 

Scales

 

 

#Carrizo National Monument research update 2018_2

We had a more ambitious set of goals this season.

Goals

  1. Habitat use frequency estimates. Tools: a. telemetry of blunt-nosed leopard lizard with a total at least 1200 relocations split between AM/PM with an estimate of shrub-open and behavior. b. cam traps at shrub-open on still mode.
  2. Behavior estimates. Tools: a. cam traps on video mode at a total of 100 hours recording time. b. direct observation (with recording too) by humans of lizards and grasshoppers at a total of 100hrs.
  3. Shrub-plant-animal interaction estimates. Tools: exclosures at two sites to exclude different taxa in shrub-open mesohabitats. a. cages. b. cams c. vacuums. d. sweeps.
  4. Temperature profile estimates. Tools: a. pulse of collars on lizards b. loggers at microhabitat scales.
  5. Census grasshoppers. Tools: stick, sweep, and vacuum. Also do direct observation to assess whether they are significant consumers.

Teams

1a. Mario and Steph. Goals 1,2,3,5.

1b. Malory and Nargol. Goals 1,2,5.

2. Emily and Kat. Goals 1 & 4.

Extensions

Deploy one set of cam traps on still mode at a total no-shrub zone.

Get a solid handle on behavior by verts and inverts in the context of paired interactions with plants (at micro-scale) and shrubs at mesoscale.

Need an assay of insect diversity.