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Some Light Reading for Your Sunday Afternoon

I am excited to present to you my summer 2016 research proposal. While previous research has shown that isolated Echinacea plants and populations experience reduced reproductive fitness, we have not looked at what influence edge effects may have on Echinacea populations. Findings presented in Ison and Wagenius 2014 showed that plants in P1 experienced slight edge effects on seed set. My research this summer will use style persistence data collected from all remnant sites and quantify the relationship between distance of an Echinacea plant from a habitat edge and average style persistence. This will help us understand if fragmented populations are being harmed by yet another factor. Hopefully you find this topic as interesting as I do.

JamesEckhardtProposal2016

Project status update: The mating scene (remnant asynchrony, isolation, and incompatibility)

This project investigates the role of three fundamental constraints on mate availability – temporal asynchrony, spatial isolation, and reproductive incompatibility – in remnant Echinacea angustifolia populations. During the summer of 2014, we conducted two studies related to The Mating Scene project. In the first study, we mapped 991 Echinacea plants and monitored the phenology of 1360 flowering heads across 31 remnants to quantify spatial isolation and flowering asynchrony. At the end of the season, we harvested 193 flowering heads from 25 remnants to assess seed set. In the second study, we performed 364 pollen crosses to characterize patterns of reproductive incompatibility within 10 remnants. With the data collected in 2014 and subsequent years, we aim to elucidate how the interactions between temporal asynchrony, spatial isolation, and reproductive incompatibility influence reproductive fitness in fragmented prairie remnants.

site # of flowering plants # of flowering heads # of crosses # of heads harvested
1 aa 60 83 36 5
2 alf 63 78 6
3 btg 3 3 2
4 dog 1 2
5 eelr 33 17 28 5
6 eri 38 54 5
7 eth 9 46 5
8 gc 6 6 3
9 kj 7 8 5
10 lce 90 70 24 5
11 lcw 51 95 24 5
12 lfe 64 103 24 5
13 lfw 89 57 24 6
14 ngc 8 5
15 nnwlf 2 13 5
16 nrrx 20 25 5
17 nwlf 13 16 5
18 on27 92 96 42 5
19 ri 82 112 44 5
20 rrx 43 47 33 5
21 rrxdc 3 3 2
22 sap 29 13 5
23 sgc 8 243 5
24 SppE 92 81 41 42
25 SppW 51 38  44 42
26 th 8 9 5
27 tower 7 11 5
28 waa 4 8
29 wood 4 4
30 yohE 4 5
31 yohW 7 9

Start year: 2014

Location: Phenology in 31 total remnants, compatibility in 10 remnants

Products: The phenology and compatibility datasets need to be made readyR. The harvested flowering heads are being processed at the Chicago Botanic Garden.

Overlaps with: phenology in six remnants, fire and flowering at SPP